Help/Support How to make a function pointer for a Static function with parameters

[Wowowowww 6 iPhone Xr 14.3]

As in the title you should know my problem I’m trying to make a function pointer for a static function. I know static functions don’t have a instances so I’ll  show what I did

void (*premium)(bool a1);

so boom a static function with a bool parameter but when I try to compile I get a error saying undeclared identifier when I try to call it. So if anyone can assist me it would be great. 

[Wowowowww 6 iPhone Xr 14.3]

Um never mind I’m mildly retarded I have fix my problem but for anyone else that need help in the future you have to return a value of the same type as the parameter for instance if a float you would return #.0f