How to add new sprite to each frame in act editor?

[junjic]

Hello, i've tried searching but no luck. This question has been asked a few times but there were no answers. I'll to ask it too so here it goes.

I'm editing MVPs in ragnarok to have an arrow on top of their head, I have the sprite ready. Basically, if i do it manually I'd need to add a new layer for the sprite and do it to all the frames. I was wondering if there is an easier way to add a sprite layer to all the frames so the arrow will be there all the time using scrips. Basically, I need to loop on all the the acts, add the sprite to each frame as a new layer. Thank you.