# GroupChannel.CreateChannel method params changed in new release

**URL:** https://community.sendbird.com/t/groupchannel-createchannel-method-params-changed-in-new-release/5140
**Category:** .Net
**Tags:** chat-sdk
**Created:** [July 22, 2022, 8:43pm UTC](https://community.sendbird.com/t/groupchannel-createchannel-method-params-changed-in-new-release/5140 "2022-07-22T20:43:32Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Darius](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@Darius](https://community.sendbird.com/u/Darius)
#### Post date: [July 22, 2022, 8:43pm UTC](https://community.sendbird.com/t/groupchannel-createchannel-method-params-changed-in-new-release/5140/1 "2022-07-22T20:43:32Z")

</div>

I recently updated the SendBird.dll in my Xamarin.iOS project with the latest one found here:

> **[GitHub - sendbird/SendBird-SDK-dotNET: Sendbird Chat SDK for Unity for...](https://github.com/sendbird/Sendbird-SDK-dotNET#before-getting-started)**
>
> Sendbird Chat SDK for Unity for enablement of a rich, engaging, scalable, and real-time chat service. - GitHub - sendbird/SendBird-SDK-dotNET: Sendbird Chat SDK for Unity for enablement of a rich, ...

Now my code won’t build anymore because the signature for the `CreateChannel` that I am calling has changed:

```auto
GroupChannel.CreateChannel(ChatManager.Instance.SelectedChannel.Members, true, ChatManager.Instance.SelectedChannel.Url, null, null, null, (GroupChannel newGroupChannel, SendBirdException exc) =>
{
    if (exc != null)
    {
        // Error.
        Console.WriteLine(exc.Message);
        return;
    }
    newGroupChannel.MarkAsRead();
});

```

`CreateChannel` now takes a `List<SendBird.User>` , not `List<SendBird.Member>`

Is there a way to get the `SendBird.User` object for each of the members that I have? The `Member` class has `UserId`