Ashley it could be done in the order of conditions.
for example other(0) - other(4) for 5 conditions that refer to the other object
Edited spongehammer this is why
I want to do something like
function knockbackEntity(strength)
set acceleration
(functionParam(0))
(other(0).X,other(0).Y,self.X,self.Y)
I don't see how to do this with familys that allows it to be this customizable