Unity CharacterController.Move Issue

So i have been looking at unity's documentation regarding the CharacterController.Move and something is bothering me why this:

 void Update () {
         if (chco.isGrounded) {
             basemo = new Vector3 (Input.GetAxis ("Horizontal"), 0, Input.GetAxis ("Vertical"));
             basemo = transform.TransformDirection (basemo);
             basemo *= 10;
             if (Input.GetButton ("Jump")) {
                 basemo.y = 10;
             }
         }
         basemo.y -= 20 * Time.deltaTime;
         chco.Move (basemo * Time.deltaTime);
     }

would let me jump but this

 void Update () {
     basemo = new Vector3 (Input.GetAxis ("Horizontal"), 0, Input.GetAxis ("Vertical"));
     basemo = transform.TransformDirection (basemo);
     basemo *= 10;
     if (chco.isGrounded) {
         if (Input.GetButton ("Jump")) {
             basemo.y = 10;
         }
     }

     //basemo = new Vector3 (Input.GetAxis ("Horizontal"), 0, Input.GetAxis ("Vertical"));
     //basemo = transform.TransformDirection (basemo);
     //basemo *= 10;
     basemo.y -= 20 * Time.deltaTime;
     chco.Move (basemo * Time.deltaTime);
 }

wouldn't even bother lifting a finger.I just want to make it move while in the air,but i can't quite figure it out.Any solution?

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