ble manager write command now working in react native

Question

I am trying to send a unlock command for a lock but ble manager return undefined in result. code below:

let finalCommand =
  "f11fffee03100014fdb247fd2a15291d1c21f417d508cb62be27d05513ded16374f6f572666f6aa043f22f";
const data = stringToBytes(finalCommand);

const unlockDevice = (data) => {
  BleManager.retrieveServices(reduxSingleDevice.doc.id).then(
    (peripheralData) => {
      BleManager.write(
        "CC:B7:15:27:DD:32",
        "6e400001-b5a3-f393-e0a9-e50e24dcca9e",
        "6e400002-b5a3-f393-e0a9-e50e24dcca9e",
        data
      )
        .then((result) => {
          // Success code
          console.log(new Date());
          console.log("data: " + data);

          console.log("result: " + result);
        })
        .catch((error) => {
          // Failure code
          console.log(error);
        });
    }
  );
};

package info:

"react-native-ble-manager": "^8.8.0",
"react-native": "0.70.5"

I am not able to send the command via ble manager in write head.