Callback?

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Red

Yes

Function TEST:string(x:int)
Notify x
EndFunction 

Local MyFunc:string(var:int) 'CALLBACK function
MyFunc = TEST
MyFunc(0) 'diplay message

2nd example

Function RepeatMe(myFunc(x:int))
myFunc(0) 'diplay message
myFunc(1) 'diplay message
myFunc(2) 'diplay message
EndFunction 

Function TEST(x:int)
Notify x
EndFunction 

RepeatMe(TEST)