Unity: Javascript callbacks, delegates - callback

Question

I would like to use Player.IO from Yahoo Games Network in my Unity javascript code. PlayerIO provides example project for unity written only in C# so I am having problems with getting the callbacks work.
PlayerIO.Connect description from Player.IO documentation for Unity (available here):
public void Connect (string gameId, string connectionId, string userId, string auth,
string partnerId, String[] playerInsightSegments,
Callback<Client> successCallback, Callback<PlayerIOError> errorCallback)
So how to make these callbacks work?
The following part of the question shows the ways I have already tried, but didn't work.
Firstly I've tried this way (as I know from javascript):
function success(client : Client) {
//function content
}
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, success, failed);
.
That was not right and I've learned that I should use delegates.
From Unity3D official tutorials (available here), the right use of delegates in JS would be like this (using the Function type):
var successDelegate : Function;
function success(client : Client) {
//function content
}
function Start () {
successDelegate = success;
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, success, failed);
}
This is causing the following error:
InvalidCastException: Cannot cast from source type to destination type.
Main+$Start$2+$.MoveNext ()
.
After that I've found a topic on Player.IO forum (available here) called Utilizing Player.IO in Unity Javascript. Suggested approach of creating delegates in JS by the author of that topic: go straight to the .Net type and declare them as System.Delegate.
var pioConnectSuccessCallback : System.Delegate;
function success(client : Client) {
//function content
}
function Start () {
pioConnectSuccessCallback = System.Delegate.CreateDelegate(typeof(PlayerIOClient.Callback.<PlayerIOClient.Client>), this, "success");
PlayerIOClient.PlayerIO.Connect(pioGameId, pioConnectionId, pioUserId, pioAuth, pioPartnerId, pioConnectSuccessCallback, pioConnectErrorCallback);
}
This is unfortunately also not working for me, although the guys on the forum present it as a working solution (but it may be outdated).
The error I'm getting:
Assets/Main.js(51,35): BCE0023: No appropriate version of
'PlayerIOClient.PlayerIO.Connect' for the argument list '(String,
String, String, String, String, System.Delegate, System.Delegate)' was
found.
So it seems like Connect method doesn't like System.Delegate as a parameter or those were not initialized well.

Answer 1

The 3rd way is working, the function is expecting 8 parameters and that was why it didn't work for me.