Hello Miijuki, I could do that, when I made the tool I thought on RPG Maker which doesn't really support idle animation, I will note that on my todo list! :)
Hey ELV Games, thanks for the fast reply. You are absolutely right, RPG Maker in itself doesn't support idle sprites. So your initial thought is definitely correct. However many people are using your sprites and tools for other game engines or stuff so it's maybe worth a shot.