My projectile is not passing through walls how do I do this in 4.9*
Hello thiefadventure,
What you will need to do is disable the collision on your projectile.
I believe this thread handles exactly what you are looking fore. It involves dynamically toggling a projectile on and off in a blueprint and detects whether it has hit a wall or not.
**I need it so it can go through certain walls **
Then what you will need to do is set up detectors for both your projectile and your walls. On the walls you want them to collide with you will need to tell the walls to block that projectile/block all. On the ones you want the projectile to go through you can disable collision.