RICOH Aficio printer and Ghostscript

Hi everyone,

I'm encountering some issues using Ghostscript to target different (input) paper trays on a Ricoh printer.

Actually, to target the tray, I use this command, on a Powershell script :
& "C:\Program Files\gs\gs9.18\bin\gswin64.exe" -dPrinted -dMediaPosition=4 -o -dNOSAFER -q -dNumCopies=1 -sDEVICE=ljet4 -sOutputFile=$myPrinter $myFile

The argument -dMediaPosition is the argument used to target the paper tray.
I tested different values on MediaPosition and got this...

RICOH Aficio printer and Ghostscript