Geckolib procedure not triggering

I've been doing research on this for a few hours now, nothing that helped or worked. 

I've downloaded geckolib for mcreator and blockbench i've activated the api thing and when I test my entity in creative the mob does not do my animation. Its a attack procedure so I didn't have the procedure in the mob's triggers and then I did read that it only works in the mob triggers so I made it so when the entity attacks outside the triggers it would turn sprint on and in I added the trigger blocks "if entity is sprinting play animation" too the trigger "on entity tick update", and yet it didn't play the animation.

Please help!

Sorry if my english is trash.