Increase energy bar by collecting item, partially working

Hi Unity Community,

When my character jumps, I got the energy bar to go down, but I am trying to increase energy when the player collides with an item. The way I am trying to do this is by playing with the localScale of the EnergyBar. I am using a boolean called "addEnergy" to check if I should increase the scale of the energyBar. So far every time the Player collides with "item" the addEnergy becomes "true" for a moment, but doesn't add to the energy bar. It only adds when I collect all the items. Wondering what could be causing this issue.

Here is the code that checks collision:

 var addEnergy : boolean = false;
 
 function Update () {
 
 Debug.Log(addEnergy);
 }
 
 function OnCollisionEnter2D(other : Collision2D){
 
 if(other.gameObject.tag == "Player"){
 
 addEnergy = true;
 
 transform.localPosition = Vector3(0, 0, -100);  
 }
 }
 
 function OnCollisionExit2D(other : Collision2D){

 addEnergy = false;
 }