Call C++ method from Obj-C method

Hi there,
So I‘ve got this issue where i have a part in my objective code which should fire a c++ method when my objective-c mehtod is called. More like:

#if Platform_IOS
-(void)objcmethod(){
// call Mymethod somehow
}
#endif

void ABasePlayer::Mymethod()
{
// does something
}

How can i do this it‘s raher complicated to develop for ios
Thanks for any sort of help