jQuery Grid Plugin - jqGrid

I am moving an existing table page with a mysql backend to jgrid and use php to access the database.  I have delete working but not add or edit.  Looking at the post items in firebug it sure looks like they are getting passed in.

Here is the php (which is based on an earlier post here):

    if($_POST['oper']=='add')
    {   // Add a New Round
        $newgame = $gh->getnewgame();
    }
    else if($_POST['oper']=='del')
    {   //delete the Round
        $id = $_POST['id'];
        $gh->deleteGame($id);
    }
    else if ($_POST['oper']=='edit')
    {   //edit the Round
        $id = $_POST['id'];
        $newgame = $gh->getnewgame($id);
    }

Anyone see a problem with the code?

Bill