Android - Code working in Unity Remote but not in Build

Hey there

I have the following code

Code (CSharp):

1. // User has tapped
2.             if (touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled)
3.             {
4.                 var isTouchingFloor = GetComponent<BoxCollider2D>().IsTouchingLayers(LayerMask.GetMask(Floor));
5.  
6.                 if (Time.time - touchTime <= 0.5 && isTouchingFloor)
7.                 {
8.                     Vector2 jumpVelocityToAdd = new Vector2(0f, 30f);
9.                     myRigidbody2D.velocity += jumpVelocityToAdd;
10.                 }
11.             }

Which works in Remote but not in build (it is suppose to make the player jump)

Any idea why it is so ?