Filter Search Dialog

Hi, I have an action which will execute a client side method to trigger the Search Dialog popup for an ItemType . See the sample code below. var topWnd = aras.getMostTopWindowWithAras(window);'SearchDialog', topWnd.main || topWnd , params) How can i filter the results which are displayed in the search dialog popup? I know that, there is a way to predefine the filters using the client side event 'onSearchDialog', but in my case i cannot use that event directly, as i am triggering the search dialog popup from a client side method, not from a property.