diff --git a/py-json/lf_attenmod.py b/py-json/lf_attenmod.py
index 053573bc..49fc1885 100644
--- a/py-json/lf_attenmod.py
+++ b/py-json/lf_attenmod.py
@@ -70,10 +70,12 @@ class ATTENUATORProfile(LFCliBase):
             raise ValueError('No attenuators in response')
 
     def create(self):
+        if self.atten_idx == 'all':
+            self.atten_idx = 8
         if int(self.atten_val) > 955:
             raise ValueError("Attenuation ddB value must be 955 or less")
-        if int(self.atten_idx) > 7 or self.atten_idx == 'all':
-            raise ValueError("Attenuation ddB value must be 7 or less")
+        if int(self.atten_idx) > 7:
+            raise ValueError("Attenuation idx value must be 7 or less")
         print("Setting Attenuator...")
         self.set_command_param("set_attenuator", "serno", self.atten_serno)
         self.set_command_param("set_attenuator", "atten_idx", self.atten_idx)
diff --git a/py-scripts/lf_atten_mod_test.py b/py-scripts/lf_atten_mod_test.py
index d6badd26..fd376e77 100755
--- a/py-scripts/lf_atten_mod_test.py
+++ b/py-scripts/lf_atten_mod_test.py
@@ -54,6 +54,7 @@ class CreateAttenuator(Realm):
         self.attenuator_profile.create()
         self.attenuator_profile.show()
 
+
 def main():
     parser = Realm.create_basic_argparse(
         prog='lf_atten_mod_test.py',
@@ -63,13 +64,13 @@ def main():
             lf_atten_mod_test.py
             --------------------
         set and show Attenuator:
-        python3 lf_atten_mod_test.py -hst 192.168.200.12 -port 8080 -atten_serno all --atten_idx all --atten_val 220
+        python3 lf_atten_mod_test.py -hst 192.168.200.12 -port 8080 -atten_serno all --atten_idx 7 --atten_val 220
                 ''')
 
     parser.add_argument('-hst', '--host', help='host name', default='192.168.200.12')
     parser.add_argument('-port', '--port', help='port name', default=8080)
     parser.add_argument('-atten_serno', '--atten_serno', help='Serial number for requested Attenuator, or \'all\'', default=2222)
-    parser.add_argument('-atten_idx', '--atten_idx', help='Attenuator index eg. For module 1 = 0,module 2 = 1', default='all')
+    parser.add_argument('-atten_idx', '--atten_idx', help='Attenuator index eg. For module 1 = 0,module 2 = 1', default=7)
     parser.add_argument('-atten_val', '--atten_val', help='Requested attenution in 1/10ths of dB (ddB).', default=550)
     args = parser.parse_args()