So this is the way scrip a overlay and its basically the same way for all overlays
@overlay BLUE COP LIGHT create @overlay BLUE COP LIGHT shifts to 140 240 @overlay BLUE COP LIGHT scales to 0.7 0.7 @overlay BLUE COP LIGHT opacity 1
So basically its the overlay that is capitalized
then put the shifting position as shown in the second line of actions
then you put the size which is the scale
then the opacity which is how much you can see the overlay
and also remember that your trying to fit it to the screen