Passing parameters to WinPE

Hi,

I'm booting a winPE with this script (which is working perfectly fine) but I would like to pass a parameter that I can retreive from the PE when it is booted.

Is there a way to do that ?

Code:

#!gpxe

kernel http://srv1/winpe/wimboot

initrd http://srv1/winpe/media/bootmgr bootmgr

initrd http://srv1/winpe/media/Boot/BCD BCD

initrd http://srv1/winpe/media/Boot/Fonts/segmono_boot.ttf segmono_boot.ttf

initrd http://srv1/winpe/media/Boot/Fonts/segoe_slboot.ttf segoe_slboot.ttf

initrd http://srv1/winpe/media/Boot/Fonts/wgl4_boot.ttf wgl4_boot.ttf

initrd http://srv1/winpe/media/Boot/boot.sdi boot.sdi

initrd http://srv1/winpe/media/sources/boot.wim boot.wim

boot

Thank you