Dialog is not showing

The Dialog is not showing when I connect...

PHP Code:

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public OnUserCheck(playerid)
{
    new num_rows, num_fields;
    cache_get_data(num_rows, num_fields, dbhandle);
    if(num_rows == 0)
    {
        // Register
        ShowPlayerDialog(playerid, DIALOG_REGISTER, DIALOG_STYLE_INPUT, "Register", "Typ a password to register", "Register", "Leave");
    }
    else
    {
        // Login
       // ShowPlayerDialog(playerid, DIALOG_LOGIN, DIALOG_STYLE_INPUT, "Login", "Fill your password to register", "Login", "Leave");
    }
    return 1;
} 


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PHP Code:

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if(dialogid==DIALOG_REGISTER)
    {
        if(response)
        {
            new pName[MAX_PLAYER_NAME], query[100], password[35];
            GetPlayerName(playerid, pName, MAX_PLAYER_NAME);
            if(strlen(inputtext) >= 3)
            {
                mysql_escape_string(inputtext, password, dbhandle);
                format(query, sizeof query, "INSERT INTO accounts (username, password) VALUES ('%s', '%s')", pName, password);
                mysql_function_query(dbhandle, query, false, "", "");
            }
            else
            {
                 SendClientMessage(playerid, COLOR_RED, "Error: Minimum password length is 3 characters!");
                   ShowPlayerDialog(playerid, DIALOG_REGISTER, DIALOG_STYLE_INPUT, "Register", "Typ a password to register", "Register", "Leave");
            }
        }
        else
        {
            Kick(playerid);
        }
    } 


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