Question Collisions not Working Properly

I have my bool isGrounded set to false automatically, and it's set to true when my player is in contact with an object on the Ground layer. Here's my script:

Code (CSharp):

1. void OnCollisionEnter(Collision coll)
2.     {
3.         isGrounded = false;
4.         Debug.Log("Airborne");
5.  
6.         if (coll.collider.gameObject.layer == LayerMask.NameToLayer("Ground"))
7.         {
8.             isGrounded = true;
9.             Debug.Log("Grounded");
10.         }
11.     }

The problem is, isGrounded is always set to true, and no matter what I change, I can't get it to set to false when I'm no longer touching a ground object. I'm sure there's a simple solution, but my beginner brain has expended it's knowledge, so any help is appreciated!

 

I am a bit new myself but I think you will need an OnCollisionExit method that sets it back false when the collision ends

 

That worked, and yeah, that was probably the most simple solution there could've been. Many thanks!