During the development of a class occasionally we may receive this error message
wrong argument types in variable assignment
The error only occurs when during runtime. I believe the issue is that the server has one copy of the class whereas your client has a different copy. you can resolve the issue by clicking on the class and doing a full compile of the class. If the class has a parent class (extends ___) then occasionally it is necessary to select the parent class, right-click, and choose Add-ins > Compile forward.
