How can define enumerator in Methods?

There is a problem when u define an enum in a method.

I was trying to do this:

VAR
    enumA:(A,B,C);
END_VAR

and there is the compiler reaction when I used this in TwinCAT3 Shell (TcXaeShell).

any help would be appreciated.

You can only use global enumerations in methods. It's one of the limitations with local enumerations.

https://alltwincat.com/2021/11/16/local-enumerations/