Leaderboard Reset User Data

There isn't such functionality built-in, but you can create your own custom add-on and add this action in its webservice, you can read how to create add-ons from the Blog section on this website at here.

For example, in your case you would have:

in your client.php

CloseConnection();
exit();

function wsDeleteScores() {
    global $WS_REQUEST, $LoggedAccount;
    $success = FALSE;
    $message = "";
    if (!$LoggedAccount->IsLogged()) {
        $message = ErrorMessage::Get(ERROR_USER_NOT_AUTHENTICATED);
    } else {
        $idLeaderboard = isset($WS_REQUEST["IdLeaderboard"]) ? intval($WS_REQUEST["IdLeaderboard"]) : 0;
        if ($idLeaderboard > 0) {
            $scores = LeaderBoard_User::LoadAccount($LoggedAccount->Id, $idLeaderboard);
            foreach ($scores as $score) {
                $success = $score->Delete();
                if (!$success) {
                    $message = "Error deleting score " . $score->Id;
                    break;
                }
            }
        } else {
            $message = "Invalid leaderboard";
        }
    }
    Utils::EchoJson(Utils::JsonEncodeSuccessMessage($success, $message));
}

in your Unity addon class

namespace Combu.Addons.YourAddonName
{
    public class YourAddonName
    {
        const string WEBSERVICE_ROOT = "addons/youraddonname/client.php";

        public static string URL
        {
            get
            {
                if (CombuManager.isInitialized)
                {
                    return CombuManager.instance.GetUrl(WEBSERVICE_ROOT);
                }
                return string.Empty;
            }
        }

        public static void DeleteScores(string idLeaderboard, Action<bool, string> callback)
        {
            CombuForm form = new CombuForm();
            form.AddField("action", "delete_scores");
            form.AddField("IdLeaderboard", idLeaderboard);
            CombuManager.instance.CallWebservice(URL, form, (string text, string error) =>
            {
                bool success = false;
                if (string.IsNullOrEmpty(error) && !string.IsNullOrEmpty(text))
                {
                    Hashtable response = text.hashtableFromJson();
                    if (response != null && response.ContainsKey("success"))
                    {
                        bool.TryParse(response["success"] + "", out success);
                        if (!success && !string.IsNullOrEmpty(response["message"] + ""))
                        {
                            error = response["message"].ToString();
                        }
                    }
                }
                if (callback != null)
                    callback(success, error);
            });
        }
    }
}

Of course this code is just an example and I didn't test it, but it's just there to give you something to start with (you'll need some PHP development knowledge to create add-ons, but it's not that hard to learn).

Thanks for your answer...

i will try it.. but right now i'm alleady confused the end of the unity script what does: </bool,> mean??

and what using directif i need for FromJson

thanks for you effort...

Ops.. I should have fixed the code, it was a copy&paste from another piece of code and forgot to remove the "FromJson" part, also the forum screwed up the code by adding arbitrary "</bool,>".

Thanks a lot... I'm still beginner in some way.. I'll give it a try...