Modding Help Change projectile velocity/position

Pretty much as the title suggests.
I am trying to create a weapon that creates a field that runs a script. This script should change the velocty or position towards the center of this field.

I know how to make this work with callScriptedEntity but that would only work for projectiles I create that hold the necessary function. But I want any projectile, that enters the zone to have their position/velocity changed.

Anyone has any ideas if this is even possible and if so, how it is done?