diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 159d657..cb40886 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,10 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="8f9b2c1e-37fa-418d-adda-b575ba9bad77" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/sample-project/src/rule-files/.~lock.VisitorRules.ots#" beforeDir="false" afterPath="$PROJECT_DIR$/sample-project/src/rule-files/.~lock.VisitorRules.ots#" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/sample-project/src/rule-files/VisitorRules.ots" beforeDir="false" afterPath="$PROJECT_DIR$/sample-project/src/rule-files/VisitorRules.ots" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/trool/lib/DecisionTable.ts" beforeDir="false" afterPath="$PROJECT_DIR$/trool/lib/DecisionTable.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/trool/lib/Trool.ts" beforeDir="false" afterPath="$PROJECT_DIR$/trool/lib/Trool.ts" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/.tmp/" />
     <ignored path="$PROJECT_DIR$/temp/" />
@@ -41,9 +40,6 @@
           <provider selected="true" editor-type-id="text-editor">
             <state relative-caret-position="17">
               <caret line="1" column="47" selection-start-line="1" selection-start-column="47" selection-end-line="1" selection-end-column="47" />
-              <folding>
-                <element signature="e#91#140#0" expanded="true" />
-              </folding>
             </state>
           </provider>
         </entry>
@@ -51,7 +47,7 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/sample-project/src/PriceCalculator.ts">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-5">
+            <state relative-caret-position="544">
               <caret line="39" column="12" selection-start-line="39" selection-start-column="12" selection-end-line="39" selection-end-column="22" />
               <folding>
                 <element signature="e#147#176#0" expanded="true" />
@@ -96,22 +92,22 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/README.md">
           <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
             <state split_layout="FIRST">
-              <first_editor relative-caret-position="187">
-                <caret line="11" column="102" selection-start-line="11" selection-start-column="102" selection-end-line="11" selection-end-column="102" />
+              <first_editor relative-caret-position="221">
+                <caret line="13" column="3" selection-start-line="13" selection-start-column="3" selection-end-line="13" selection-end-column="3" />
               </first_editor>
               <second_editor />
             </state>
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/trool/lib/Trool.ts">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="153">
+            <state relative-caret-position="612">
               <caret line="39" column="32" selection-start-line="39" selection-start-column="32" selection-end-line="39" selection-end-column="32" />
               <folding>
                 <element signature="e#73#112#0" expanded="true" />
@@ -123,8 +119,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/trool/lib/DecisionTable.ts">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="255">
-              <caret line="24" column="57" selection-start-line="24" selection-start-column="57" selection-end-line="24" selection-end-column="57" />
+            <state relative-caret-position="-39">
+              <caret line="18" column="5" lean-forward="true" selection-start-line="18" selection-start-column="5" selection-end-line="18" selection-end-column="5" />
             </state>
           </provider>
         </entry>
@@ -187,9 +183,9 @@
         <option value="$PROJECT_DIR$/sample-project/src/models/Visitor.ts" />
         <option value="$PROJECT_DIR$/trool/lib/types.ts" />
         <option value="$PROJECT_DIR$/sample-project/src/start.ts" />
-        <option value="$PROJECT_DIR$/README.md" />
         <option value="$PROJECT_DIR$/trool/lib/DecisionTable.ts" />
         <option value="$PROJECT_DIR$/trool/lib/Trool.ts" />
+        <option value="$PROJECT_DIR$/README.md" />
       </list>
     </option>
   </component>
@@ -295,12 +291,13 @@
       <workItem from="1551549401856" duration="1925000" />
       <workItem from="1551551337869" duration="5176000" />
       <workItem from="1551556526404" duration="23754000" />
-      <workItem from="1551630302681" duration="11549000" />
+      <workItem from="1551630302681" duration="11595000" />
+      <workItem from="1551657377887" duration="139000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="43852000" />
+    <option name="totallyTimeSpent" value="44037000" />
   </component>
   <component name="ToolWindowManager">
     <frame x="1920" y="-1" width="1920" height="1158" extended-state="6" />
@@ -323,7 +320,7 @@
       <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
       <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
-      <window_info anchor="right" content_ui="combo" id="Project" order="3" visible="true" weight="0.2593184" />
+      <window_info anchor="right" content_ui="combo" id="Project" order="3" visible="true" weight="0.26198083" />
     </layout>
     <layout-to-restore>
       <window_info id="Favorites" order="0" side_tool="true" />
@@ -412,8 +409,8 @@
           <column index="0" width="100" />
         </state>
       </provider>
-      <provider editor-type-id="text-editor" />
       <provider selected="true" editor-type-id="csv-text-editor" />
+      <provider editor-type-id="text-editor" />
     </entry>
     <entry file="file://$PROJECT_DIR$/trool/node_modules/csvtojson/src/Converter.ts">
       <provider selected="true" editor-type-id="text-editor">
@@ -436,20 +433,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/trool/tsconfig.json">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="544">
-          <caret line="32" column="3" selection-start-line="32" selection-start-column="3" selection-end-line="32" selection-end-column="3" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/sample-project/tsconfig.json">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="238">
-          <caret line="14" column="25" selection-start-line="14" selection-start-column="25" selection-end-line="14" selection-end-column="25" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/sample-project/package.json">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="102">
@@ -457,41 +440,10 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/sample-project/src/models/Ticket.ts">
+    <entry file="file://$PROJECT_DIR$/sample-project/tsconfig.json">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="374">
-          <caret line="22" column="5" selection-start-line="22" selection-start-column="5" selection-end-line="22" selection-end-column="5" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/trool/lib/types.ts">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="34">
-          <caret line="2" column="27" selection-start-line="2" selection-start-column="27" selection-end-line="2" selection-end-column="27" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/sample-project/src/models/constants.ts">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="119">
-          <caret line="7" column="1" selection-start-line="7" selection-start-column="1" selection-end-line="7" selection-end-column="1" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/sample-project/src/models/Visitor.ts">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="102">
-          <caret line="6" column="30" selection-start-line="6" selection-start-column="30" selection-end-line="6" selection-end-column="30" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/README.md">
-      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
-        <state split_layout="FIRST">
-          <first_editor relative-caret-position="187">
-            <caret line="11" column="102" selection-start-line="11" selection-start-column="102" selection-end-line="11" selection-end-column="102" />
-          </first_editor>
-          <second_editor />
+        <state relative-caret-position="238">
+          <caret line="14" column="25" selection-start-line="14" selection-start-column="25" selection-end-line="14" selection-end-column="25" />
         </state>
       </provider>
     </entry>
@@ -507,7 +459,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/sample-project/src/PriceCalculator.ts">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-5">
+        <state relative-caret-position="544">
           <caret line="39" column="12" selection-start-line="39" selection-start-column="12" selection-end-line="39" selection-end-column="22" />
           <folding>
             <element signature="e#147#176#0" expanded="true" />
@@ -515,16 +467,30 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/trool/lib/DecisionTable.ts">
+    <entry file="file://$PROJECT_DIR$/sample-project/src/models/Visitor.ts">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="255">
-          <caret line="24" column="57" selection-start-line="24" selection-start-column="57" selection-end-line="24" selection-end-column="57" />
+        <state relative-caret-position="102">
+          <caret line="6" column="30" selection-start-line="6" selection-start-column="30" selection-end-line="6" selection-end-column="30" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/sample-project/src/models/constants.ts">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="119">
+          <caret line="7" column="1" selection-start-line="7" selection-start-column="1" selection-end-line="7" selection-end-column="1" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/trool/tsconfig.json">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="544">
+          <caret line="32" column="3" selection-start-line="32" selection-start-column="3" selection-end-line="32" selection-end-column="3" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/trool/lib/Trool.ts">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="153">
+        <state relative-caret-position="612">
           <caret line="39" column="32" selection-start-line="39" selection-start-column="32" selection-end-line="39" selection-end-column="32" />
           <folding>
             <element signature="e#73#112#0" expanded="true" />
@@ -532,6 +498,37 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/trool/lib/types.ts">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="34">
+          <caret line="2" column="27" selection-start-line="2" selection-start-column="27" selection-end-line="2" selection-end-column="27" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/trool/lib/DecisionTable.ts">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-39">
+          <caret line="18" column="5" lean-forward="true" selection-start-line="18" selection-start-column="5" selection-end-line="18" selection-end-column="5" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/sample-project/src/models/Ticket.ts">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="374">
+          <caret line="22" column="5" selection-start-line="22" selection-start-column="5" selection-end-line="22" selection-end-column="5" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/README.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="FIRST">
+          <first_editor relative-caret-position="221">
+            <caret line="13" column="3" selection-start-line="13" selection-start-column="3" selection-end-line="13" selection-end-column="3" />
+          </first_editor>
+          <second_editor />
+        </state>
+      </provider>
+    </entry>
   </component>
   <component name="masterDetails">
     <states>
diff --git a/README.md b/README.md
index e55172b..64eb216 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,5 @@ https://github.com/CacheControl/json-rules-engine
 
 // mention that it's not a good practice to set strings in directly to the spreadsheet and should
 // use a constants class. This prevents Product Owners from inputing bad values into the spreadsheet. 
+
+// Class.method() to not use a built in operator in condition. Class must be a fact or must be imported. 
diff --git a/sample-project/src/rule-files/VisitorRules.ots b/sample-project/src/rule-files/VisitorRules.ots
index 6975a23..3618600 100644
Binary files a/sample-project/src/rule-files/VisitorRules.ots and b/sample-project/src/rule-files/VisitorRules.ots differ