How to start/stop supercharger manualy (on fly)?

The "supercharger": "clutchEngageRPM" and "clutchDisengageRPM" sets up as one of the first steps when parsing the vehicle and have no meaning after initialization? Did I understand correctly?
This code work fine:

Code:

 "variables": [
        ["name", "type", "unit", "category", "default", "min", "max", "title", "description"],
        ["$scharger_on", "range", "off/on", "Supercharger", 0,0,10000, "Manual Supercharger switch", "switch position (engage/disengage supercharger)", {"stepDis":1, "maxDis":1}],
        ],
        "supercharger": {
        "clutchDisengageRPM": "$scharger_on",   
        },

But I need to start and stop supercharger manualy on fly too.
How to do it using Jbeam/LUA?

 

See if you can figure out what the devs did with the Bastion's ESC, on the "Caged" mode the supercharger is consistently disabled.

 

Excellent! Thank you for prompt about Bastion's drive mode.
My supercharger work fine and can be switched on fly with "lua\vehicle\controller\driveModes.lua" now.
The next one is supercharger pulley spin and stop attached to "drivemodes" controller code.

Code:

 
    "controller": [
            ["fileName"],
            ["driveModes"]
    ],
       "driveModes": {
            "enabledModes":["SC_engaged", "SC_disengaged"]
            "defaultMode": "SC_disengaged"
        "modes": {
                "SC_engaged": {
                    "name": "SuperCharger engaged",
                    "order": 10,
                    "settings": [
                        ["type"]
                        ["supercharger", {"name": "mainEngine", "bypassPressure": 9999}]
                   ],
                },
                "SC_disengaged": {
                    "name": "SuperCharger disengaged",
                    "order": 20,
                    "settings": [
                        ["type"]
                        ["supercharger", {"name": "mainEngine", "bypassPressure": 0}]
                    ],
                },
            },
        },