I would like to change a dropdown list when another dropdown list value changes.  Is this even possible and what am I missing, here is what I got:

I am applying and On Field Change to all users

Execute on create/edit

Event" On Field Change and Office is the field

Condition Office is not "Corporate"

Action Execute Script

1. $CS.addOptions("WorkOrder_Fields_UDF_CHAR6",["Cashier","Account Manager","Collector","Utility","Collections Manager","Assistant Manager","General Manager"]); 

But when I change office to anything nothing happens.