Call Transaction In ABAP WDP

Hi,

I Created a Transactional Iview for TC:PA20 in the Portal Content , In portal as well i was able to look into the preview of the transaction code PA20. I used the follwing code to navigate this Transactional IView in the ABAP WEBDYNP which is been linked to an action button .There is no view or dump comming up when i hit the button .

The code is as below for navigation :

data lr_componentcontroller type ref to ig_componentcontroller .

data l_api_componentcontroller type ref to if_wd_component.

data lr_port_manager type ref to if_wd_portal_integration.

lr_componentcontroller = wd_this->get_componentcontroller_ctr( ).

l_api_componentcontroller = lr_componentcontroller->wd_get_api( ).

lr_port_manager = l_api_componentcontroller->get_portal_manager( ).

Data: target type string.

Data: nmode type string.

target = 'pcd:portal_content/workbench/wkb_iview_p20'.

nmode = 'INPLACE'.

call method lr_port_manager->navigate_absolute

exporting

NAVIGATION_MODE = nmode

navigation_target = target .

Just wondering wht else i was missing ..any suggestion would be helpfull..

Thanks,

Kumar.