third person double jump

hey guys , i want a double jump to this script , i removed if (IsGrounded()) for unilimited jumps , but me all i want is just 2 jumps , how could i modify this script please , btw im using the default third person character controller from unity , thanks !

 function ApplyJumping ()
 {
     // Prevent jumping too fast after each other
     if (lastJumpTime + jumpRepeatTime > Time.time)
         return;
 
     if (IsGrounded()) {
         // Jump
         // - Only when pressing the button down
         // - With a timeout so you can press the button slightly before landing        
         if (canJump && Time.time < lastJumpButtonTime + jumpTimeout) {
             verticalSpeed = CalculateJumpVerticalSpeed (jumpHeight);
             SendMessage("DidJump", SendMessageOptions.DontRequireReceiver);
         }
     }
 }