//clearOutput();
		var myComp = app.project.activeItem;
   	var selectedLayers = myComp.selectedLayers; 
	for ( var i = 0; i < selectedLayers.length; i++) { 
		var myLayer = selectedLayers[i]; 
			if (i==0)
			myLayer.startTime=1;
			
				
		else if (i>0)
		myLayer.startTime=2*i+1;
		
		
		
}