Colliders Doesn't work on scalable sprite

Hello,
I'm new here! So, I'm creating my game, which has no gravity effects. There is two boxes, a player and an enemy. The enemy's size is fixed, but the player's isn't; in fact, when I press "a", the box scales up and when I release the key, the box scales down. I've attached rigidbodies2d and colliders2d, but when these two collides, the event doesn't work. It means when the player scales up and arrives to the enemy, nothing is happening. I want that these two colliders interact, but how?
Thank You

 

There are lots of things that can cause collisions to not happen. Check out this section of the manual.

 

thanks found the problem

 

So what was it?