React native - how can i listen callBack function

I wrote an application that works with Bluetooth. I have no problem connecting to the application, but I cannot receive the data sent from the Bluetooth device from the application. I think I used the correct code block in the Bluetooth library documentation. Do I need to do anything extra? Can you help me?

Document link : https://www.npmjs.com/package/@infobiotech/react-native-bluetooth-serial-next

My code is here:

import React, {Component, useEffect, useState} from 'react';import {View, Text, Button} from 'react-native';import BluetoothSerial from 'react-native-bluetooth-serial-next';class Test5 extends React.Component {  constructor(props: {}) {    super(props);    this.state = {      isEnabled: false,      connectedDevice: null,    };  }  componentDidMount() {    BluetoothSerial.isEnabled().then(enabled => {      this.setState({isEnabled: enabled});    });  }  connectToDevice = () => {    BluetoothSerial.list()      .then(devices => {        console.log(devices);        var device1 = devices[0];        for (let index = 0; index < devices.length; index++) {          let device = devices[index];          if (device.id === 'A0:B7:65:54:0C:26') {            device1 = device;            break;          }        }        const device = device1;        BluetoothSerial.connect(device.id)          .then(() => {            this.setState({connectedDevice: device});            console.log('Connected to device:', device.name);          })          .catch(error => {            console.error('Connection error:', error);          });      })      .catch(error => {        console.error('List error:', error);      });  };  sendData = () => {    BluetoothSerial.write('10')      .then(() => {        console.log('Data sent successfully');      })      .catch(error => {        console.error('Send error:', error);      });  };  readData = () => {    BluetoothSerial.read((data, subscription) => {      console.log('Receive Data : '+ data);      if (this.imBoredNow && subscription) {        BluetoothSerial.removeSubscription(subscription);      }    });  };  render() {    const {isEnabled, connectedDevice} = this.state;    return (<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}><Text>Bluetooth Classic</Text>        {isEnabled ? (<View>            {connectedDevice ? (<View><Text>Connected to: {connectedDevice.name}</Text><Button title="Send Data" onPress={this.sendData} /></View>            ) : (<Button title="Connect" onPress={this.connectToDevice} />            )}</View>        ) : (<Button            title="Enable Bluetooth"            onPress={() => BluetoothSerial.enable()}          />        )}</View>    );  }}export default Test5;