navigation issue in webdynpro app

Hi all,

I use WDPortalNavigation.navigateAbsolute(..) method in webdynpro app to pop up a external window. It works fine if I put the webdynpro application into a page and click the link in page. But if I use the direct webdynpro url, such as "http://.../webdynpro/dispatcher/.../UITController" to run the app, it doesn't pop-up window.

Anyone met similar problem before?

Here is my code:

WDPortalNavigation.navigateAbsolute(

URL, // The absolute navigation url to navigate to

WDPortalNavigationMode.SHOW_HEADERLESS_PORTAL, // The mode in which the navigation will be performed

windowFeatures, // Additional client windows properties (for external window only)

null, // The name of the client window (for external window only)

WDPortalNavigationHistoryMode.NO_HISTORY, // The used history mode (i.e. defined how the navigation target occurs in the navigation history)

null, // The displayed title in the page title bar (optional)

null, // The used navigation context (optional)

null, // businessParameters optional (business) parameters like customerID=4711

null, // optional (launcher) parameters like WebDynproNamespace=myNamespace

false, // defines whether or not the defined parameters are POST or GET parameters

false); // should be TRUE if the navigation destination uses the SAP application launcher (i.e. if the navigation destination is implemented using BSP, Web Dynpro, ITS or SAPGui)