Can someone fix this coding?

Gives this error - Flashlight.js(15,37): BCE0005: Unknown identifier: ‘hBarImage’.

 function OnGUI {
    GUI.BeginGroup( Rect(40, 10, 218 * (health/10.0) +35 , 90) );
    GUI.Label( Rect(0, 0, 272, 90), hBarImage );
    GUI.EndGroup();
}

You have not define hBarImage at least not that I can see in this code fragment. You need to put

var hBarImage : Texture;

at the top of the script and then set it to something.