Becoming crazy with Axis And Ohs Saitek assigment

Plane: HondaJet
Goal: use one of the Saitek “Switch Panel” two-state switch to set parking brakes on/off

The panel works, i am using the battery button without problems
I have assigned to the “avionic Master” switch to open/close spoilers without problems

PROBLEM
I have created two rpn scripts:

Honda-ParkingBrake_ON
1·(>K:PARKING_BRAKE_SET)

Honda-ParkingBrake_OFF
0·(>K:PARKING_BRAKE_SET)

I want to use the FuelPump Switch to enable/disable the parking brake

So, in the Saitek/event menu I do as follow:
SP_FUEL_PUMP_1_ON → Honda-ParkingBrake_ON
SP_FUEL_PUMP_2_ON → Honda-ParkingBrake_ON
SP_FUEL_PUMP_3_ON → Honda-ParkingBrake_ON
SP_FUEL_PUMP_4_ON → Honda-ParkingBrake_ON
SP_FUEL_PUMP_1_OFF → Honda-ParkingBrake_OFF
SP_FUEL_PUMP_2_OFF → Honda-ParkingBrake_OFF
SP_FUEL_PUMP_3_OFF → Honda-ParkingBrake_OFF
SP_FUEL_PUMP_4_OFF → Honda-ParkingBrake_OFF

I have done one million of test, i can turn ON but NO WAY IN ANY UNIVERS to turn it OFF.

If I assign the OFF to a joystick button, it works.
If I assign to another switch, btw the strobe light with
SP_STROBE_ON → Honda-ParkingBrake_ON
SP_STROBE_OFF → Honda-ParkingBrake_OFF

it works.

Can someone help me?
Thank you so very much

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