In that case, if your enemies uses platform behavior, you need to set their vector X and Y on player touch, and depending of their position relative to player it will be a negative or positive number for vector X, and a negative number for vector Y to simulate a small jump
+ player: On collision with enemy
----+ player: X ≤ enemy.X
-----> player: Set Platform vector X to -600
----+ player: X ≥ enemy.X
-----> player: Set Platform vector X to 600
and working.. but he do just a very little push and if i change -600 whit -6000 nothing happen