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So what you're saying is that when I have a conditional branch saying 'When A is pressed...' I actually have to press the left shirt, right shift or z button?
Well I tried that and it didn't work for me...
You can override this during gameplay - I think pressing the F1 key brings up the keyboard mapping. Just check what keys are assigned to "the A key".
This, of course, is if you haven't added any scripts that modify the behaviour.