Trying to make certain units attack each other

I am trying to make certain mobs attack each other but they just jump at each other and die of fall damage. I found that they jump at eachother because they have a leap at target destination script but if i remove it, they just ignore the other mob. I do have the attack entities of type <entity i want them to attack> but they still don't attack. Does anyone know how to make them attack each other?