[FEATURE REQUEST] A better -void management

I want a better management of void functions in Flex.
Actually, if I select a void into Flex, when I open the relative app, the void isn't called.
I would love if Flex will able to call void functions in certain time.
For example, I have this void function "-(void)ShowSecretSectionIntoSettings", and I would love if, selecting it into flex, I will able to see that section in settings.
I can do this with Flexible only, but calls aren't permanent, so every time I open the app, I must call that void.
Is it possible add better management of void?
Thanks!