hello so im making a jump for my 3d character but when i press spacebar i can jump forever anyone know how to fix this problem heres my code

pragma strict

ar rb: Rigidbody; private var jumping = false; function Start() { rb = GetComponent.(); } function FixedUpdate () { if (Input.GetButtonDown("Jump") && jumping == false) { rb.velocity = Vector3(0,10,0); } jumping = true; }

function OnCollisionStay(){ jumping = false; }