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

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