Player movement- forward and back using Mouse Wheel

//---Controls variable Forward and Backward Speed with Mouse Wheel------

function mouseWheelControlsFwdBackSpeed(%val)
{
   %mouseWheelControlsFwdBackSpeedAdj = getMouseAdjustAmount(%val);
   
// Clamp and scale
   %mouseWheelControlsFwdBackSpeedAdj = mClamp(%mouseWheelControlsFwdBackSpeedAdj, -m2Pi()+0.01, m2Pi()-0.01);
   %mouseWheelControlsFwdBackSpeedAdj *= 0.25;   // was 0.5 in yaw mode, adjust sensitivity


   $mvForwardAction += %mouseWheelControlsFwdBackSpeedAdj;
//      echo("forwardspeed = " @$mvForwardAction);
   
// the if statement makes stopping easier because it gives a range for stopping   
   if ($mvForwardAction > -.03 && $mvForwardAction < 0.03 ) 
   {
//      echo("stoppingspeed = " @$mvForwardAction);
      $mvForwardAction = 0;
   }
}


moveMap.bind( mouse, "zaxis", mouseWheelControlsFwdBackSpeed );