var cname, cvalue, Pfad, json, i, wert, objektid, value;

function subsequenceFromStartFromEnd(sequence, at1, at2) {
  var start = at1;
  var end = sequence.length - 1 - at2 + 1;
  return sequence.slice(start, end);
}

// Beschreibe diese Funktion …
async function write(cname, cvalue) {
    
        var objectName = cname;
        var MyString = cvalue;
        
        if ( !existsState(objectName )) {
        createState(objectName,MyString,{name: " ",  type: 'string', role: 'value'}, function () {}); 
        } else {
        setState(objectName,"" + MyString);
        }
}


Pfad = '0_userdata.0.EcoFlow.MQTT.SERIALNUMBER.';
on({id: [].concat(['mqtt.5.app.device.property.SERIALNUMBER']), change: "ne"}, async function (obj) {
  var value = obj.state.val;
  var oldValue = obj.oldState.val;
  json = getState("mqtt.5.app.device.property.SERIALNUMBER").val;
  var i_list = subsequenceFromStartFromEnd(JSON.stringify(jsonataExpression((function () { try {return JSON.parse(json);} catch(e) {return {};}})(),'$.params')), 1, 1).split(',');
  for (var i_index in i_list) {
    i = i_list[i_index];
    wert = i.split(':');
    objektid = subsequenceFromStartFromEnd(wert[0], 1, 1);
    value = wert[1];
    await write(String(Pfad) + String(objektid), value);
  }
});