I'm letting you know I found a lot of stupid mistakes I checked alot of things and everything seems to work until I hit trace, I think that is where I messed up here it is. Code:

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 var light_impact = 1;	//makes sure impact only is triggered once
var lightvec[3];
var light_target;

function light_fall_func
{
  sleep (1);	// let me get out of the way
                // this also returns to the event function so it can terminate.
  trace_mode = ignore_me+ignore_you+ignore_sprites+ignore_models+ignore_passable+use_box; 
                  //calculate box around light for collision, 
                  // should only detect level geometry
  light_target = trace(my.z,lightvec);	//I think it detects something besides geometry
	if (target < 50)
	{
		msg_show ("less than 50", 5);		//testing purposes
	}
  while (my.z > target)	//when there is still distance between the target	
  {
    msg_show ("Now I'm in the trace loop", 5);		//testing purposes
    trace_mode = ignore_me+ignore_you+ignore_sprites+ignore_models+ignore_passable+use_box; 
                  //can't be sure it is the same after a wait 
    my.z -= 1;	// move the light			
    wait (1);		
  }	
}

function light_fall
{
    if (light_impact == 1)
    {
	light_impact = 0;	//stop trigger, only happens once
	wait(1);	//let everything settle for a frame
	you.push = 0;	//value is already at 0, put in for good measure
	vec_set(lightvec,my.z);				
	lightvec.z -= 100; //calculate a spot 100 quats below entity 
                    //  (playing with this value)
	light_fall_func(); // start the real function now
    }
}

action light
{
  my.push = 1;   //push must have higher value on light 
                 //  then object hit to trigger	
  my.enable_impact = on;		
  my.event = light_fall;	
}

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