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is there someone here that can help me write a finite timer scripts?
I need 3 scripts

timer_get(id,time)
timer_update_all()
timer_delete(id)

timer_get would create a timer and get a string ID and get a time or delay
it would then check if it was 0 or lesser. if it is then it would return true

timer_update_all would update all the timers created by timer_get if they were greater then 0

timer_delete would delete the timer with the given id

I have proto typed a script called wait(id,time) that is basically all three put together
however I am trying to separate them into three scripts so that it can be updated deleted and called in different positions

this is what I currently have

Expand///wait(string,time)
var ID = string(id)+argument0
var Time = argument1
if !ds_map_exists(global.timers,ID) {
  ds_map_add(global.timers,ID,Time)
}
else {
  if ds_map_find_value(global.timers,ID) <= 0 {
    ds_map_delete(global.timers,ID)
    return true
  }
  else {
    ds_map_replace(global.timers,ID,ds_map_find_value(global.timers,ID)-1)
  }
}

the problem is that I can't find a way to iterate though all the ds_map(global.timers,ID) and subtract one from them.
since they use keys instead of indexs however I need these keys so that I can assign a id to them and be checked if they exist or not