sending the navigation params as props to other component

I am using RN v0.46.4 , react-navigation and sendbird.

I am developing a chat application.

What I am trying to do is that navigating the user to Msg screen with two params item (contain user info) and createdChannel .

They are passed but only once i.e. each time I navigate to Msg screen for different users , I receive the same value on which I have presses first.

Chat Screen

_chat(item){

 // console.log(item);
 const { navigate } = this.props.navigation

  var userIds = [item.id,1];
  sb = new SendBird({appId: APP_ID});
  sb.connect(1, function(user, error) {
         //console.log(user);
      sb.GroupChannel.createChannelWithUserIds(userIds, true, item.firstname, function(createdChannel, error) {
    if (error) {
        console.error(error);
        return;
    }

   //console.log(createdChannel);
   navigate('Msg', { item, createdChannel })

});

Also, when I console createdChannel in _chat function , it gives the roght information as expected.

But when I console it in Msg screen , I receive only the first createdChannel created, already told above.

Msg Screen

 super(props);
  console.log(props.navigation.state.routes[1].params.createdChannel);

My router structure:

const CustomTabRouter = TabRouter(
  {

    Chat: {
      screen: ChatStack, 
      path: ""
    }
}

ChatStack

const ChatStack= StackNavigator({
      Chat:{screen: Chats,
      navigationOptions: {
       header: null,
     }},

      Msg: {
      screen: Msg,
      navigationOptions: ({ navigation}) => ({
       title: `${navigation.state.params.item.firstname} ${navigation.state.params.item.lastname}`,
        tabBarVisible: false

      })
    },
    })