Add LASER Cross on QtplasmaC

Hi, I'm trying to add a laser cross in my QtPlasmaC configuration.
- I add : a Qt-laser.hal file with "net qtplasmac.laser_on => parport.0.pin-08-out"    my laser is connected to P8 of my parport.0, (and light on with halrun test)
- I add : in QtPlasmaC.ini section [HAL]   HALFILE = Qt-laser.hal
- I add : in QtPlasmaC.prefs section [BUTTONS]  8 Name = LASER  and  8 Code = toggle-laser

When in Run QtplasmaC, powered it and homed the Laser button toggle correctly but the laser light doesn't

Can you help me to understand my mistake.
regards, Michel

Have you set up the offsets for the laser with Peripheral Offsets?
linuxcnc.org/docs/devel/html/plasma/qtpl...l#peripheral-offsets
linuxcnc.org/docs/devel/html/plasma/qtplasmac.html#plasma:laser

I think it should be qtplasmac.laser.on
see manual.