Hello Mind-Brain and thanks again for you reply!
So…here what i did, this time i’ll send you more complete print screens so you can understand what i am currently doing.
This is the BP Start_AI (the box collision):
And this is the Enemy AI Controller:
Here you can see the new variable that i have created on the Enemy:
I placed the BoxCollision BP near the enemy just to make tests:
But it seems that i made some mistakes since the IsValid check still is Not Valid…
Thanks for your help!!