function init() {}

var params_container = script.addContainer("Parameters");
var log_data = params_container.addBoolParameter("LogData", "Choose if you want to see a translation of the sysex", false);
var faders_container = script.addContainer("Faders");

function sysExEvent(data) {
	parseSysex(data);
}

function logData(data) {
	script.log("-------- sysex message start ---------");
	script.log("universal_sysex > "+ data[0]);
	script.log("device_id > "+ data[1]);
	script.log("msc > "+ data[2]);
	script.log("command_format > "+ data[3]);
	script.log("command > "+ data[4]);
	script.log("fader > "+ data[5]);
	script.log("fader_page > "+ data[6]);
	script.log("fine_value > "+ data[7]);
	script.log("coarse_value > "+ data[8]);
	script.log("-------- sysex message end ---------");
}

function hexToFader(coarse, fine) {
  return Math.floor(((fine / 128) + coarse) / 1.28);
}

function parseSysex(data) {
	if (data[4] == 6) {
		if (log_data.get())logData(data);
		
		var fader_level = hexToFader(data[8], data[7]);

		var parameter_name = "FaderValue"+data[5];
		faders_container.addFloatParameter(parameter_name,"Value of the fader Exec "+data[5],fader_level,0,100);
		var param = faders_container.getChild(parameter_name);
		param.set(fader_level);

		/*if (typeof param === "void") {
			script.log("Creating the fader parameter.");
			faders_container.addFloatParameter(parameter_name,"Value of the fader Exec "+data[5],fader_level,0,100);
		}
		else {
			param.set(fader_level);
		}*/
	}
}

Create a custom variable group named “Execs” first.

function fixedIt(precision, value, num) {
  var num = "" + (Math.round(value * Math.pow(10, precision)));
  //return num.substring(0, num.length - precision) + "." + num.substring(num.length - precision, num.length);
  return "0."+num.substring(num.length - precision, num.length);
}

function faderToHex(fader_value) {
  var temp_coarse = fader_value * 1.28;
  var coarse = parseInt(Math.floor(temp_coarse));
  var coarse_hex = Integer.toHexString(coarse);
  if (coarse < 16) coarse_hex = "0"+ coarse_hex;

  //var coarse_decimals = (temp_coarse %1).toFixed(2);
  var coarse_decimals = parseFloat(fixedIt(2,temp_coarse %2));
  var temp_fine = coarse_decimals * 128;
  var fine = parseInt(Math.floor(temp_fine));
  var fine_hex = Integer.toHexString(fine);
  if (fine < 16) fine_hex = "0"+ fine_hex;

  return {
    'coarse': ""+coarse,
    'fine': ""+fine
  }
}

function filter(inputValue, min, max) {
  var hex_values = faderToHex(Math.abs(inputValue[0]));

  var parameter_name = script.getParent().getParent().getParent().getParent().getParent().name;

  //root.customVariables.execs.variables.addStringParameter(parameter_name+ "_coarse","Hex coarse value of mapping "+parameter_name,hex_values.coarse);
  root.customVariables.execs.variables.addStringParameter(parameter_name+ "_coarse","Hex coarse value of mapping "+parameter_name,hex_values.coarse);
  var param = root.customVariables.execs.variables.getChild(parameter_name+ "_coarse");
  param.set(hex_values.coarse);

  root.customVariables.execs.variables.addStringParameter(parameter_name+ "_fine","Hex fine value of mapping "+parameter_name,hex_values.coarse);
  var param = root.customVariables.execs.variables.getChild(parameter_name+ "_fine");
  param.set(hex_values.fine);

  return inputValue;
}