Set initial value of a light potentiometer (PFD)

How to set the light potentiometer to a initial value of 80?
Thanks

80.0 (>K:LIGHT_POTENTIOMETER_SET) 7 (>K:LIGHT_POTENTIOMETER_INDEX_SET)

80 7 (>K:2:LIGHT_POTENTIOMETER_SET)

Great, thanks. How to have this only at first plane load and not always?

	<Component ID="PFD_Initialization">
		<OnEvent NAME="PLANE_LOADED">
			80 7 (>K:2:LIGHT_POTENTIOMETER_SET)
		</OnEvent>
	</Component>

set it in the .FLT files