Ilford 500H with graded papers

Has any worked with this head and graded papers? Would I set the contrast at 5 o get maximum blue light? Not sure where to start on this.

Use 4 or 4 1/2

Hi,
I haven't used graded papers on my 500, but here is what it says in the manual:
"Prints from graded paper such as ILFOSPEED can be made using the ILFOSPEED MULTIGRADE 500 equipment. ILFOSPEED paper is only sensitive to blue light, therefore select contrast grade 4 or 4 1/2 (suggested) on the control unit as a compromise between exposure time and image visibility."
I imagine this applies to most graded papers. Have fun!