[Closed] Best way to execute a script once per frame?

in simplest terms something like this ? Ideally the callback function is a global declared in a startup script of some kind.

fn time_p = print currentTime

plugin Helper CallbackHelper
name:"CBDummy" 
classID:#(0x47db14fe, 0x4e9b5f90) 
category:"Standard" 
extends:dummy 
( 
	on Create do  registerTimeCallback time_p;
	on load do  registerTimeCallback time_p;	
	on deleted do 
	(
		unregisterTimeCallback time_p;
	)	
)

the deleted is problematic as it doesn’t get called immediately (and when it does it doesn’t seem to work. Someone else may have the solution.