How to create a simple BP for an enemy to slow his movement speed down when he is going over a box collision which should trigger this ?

yes SlowEnemyMovementSpeed is the variable but is at positive 70 can i go on it like as default value in the variable -70 ? if yes then true i dont need that equation. will try again.

Edit: its not working without the equation if i set it to -70 they dont move at all and if i set it to 70 then ALL enemy get down to movement speed equal to 70 but i do not want to do that scince i have different enemys with very different movement speed i want to apply that they get -70 to the base of they’re movement speed so like faster enemy’s get only a little slowed and not all to just fall back to like 70 speed units and thats awmost like a slow mo