Calling a Web Dynpro Application from POWL feeder class

Hi,
I know this question is asked before but never answered, but I try again......
I have a own POWL feeder class where I defined a button in method IF_POWL_FEEDER~GET_ACTIONS.
I know that this action can be handled in method IF_POWL_FEEDER~HANDLE_ACTION.
When pressing the button I want do call another web dynpro application.
How can I do this? -> Any Example Coding?
Thank you and best regards, Edgar

Hi Vineet,
it works, thanks a lot!!!! Best Regards, Eddy
P.S.: Here is the coding for triggering the event and passing parameters for the selected POWL table line:
METHOD if_powl_feeder~handle_action.
DATA: ls_parameter TYPE powl_namevalue_sty.
DATA: lt_flights TYPE ty_flights.
DATA: ls_flight TYPE sflight.
DATA: ls_selected TYPE rstabix.
FIELD-SYMBOLS: <lt_fligts> TYPE STANDARD TABLE.
IF i_actionid = 'EDIT'.
* Important: this triggers the event
 e_portal_actions-fire_wdevent = abap_true.
* Pass parameters to event
 ASSIGN c_result_tab TO <lt_fligts>.
 lt_flights = <lt_fligts>.
* Determine the first selected row
 READ TABLE c_selected INTO ls_selected INDEX 1.
* Read selected POWL data
 READ TABLE lt_flights INDEX ls_selected-TABIX INTO ls_flight.
 CHECK sy-subrc = 0.
* Pass parameters
 ls_parameter-key = 'ACTIONID'.
 ls_parameter-value = 'I_ACTIONID'.
 APPEND ls_parameter TO e_portal_actions-parameters.
 ls_parameter-key = 'CARRID'.
 ls_parameter-value = ls_flight-carrid.
 APPEND ls_parameter TO e_portal_actions-parameters.
 ls_parameter-key = 'CONNID'.
 ls_parameter-value = ls_flight-connid.
 APPEND ls_parameter TO e_portal_actions-parameters.
 ls_parameter-key = 'FLDATE'.
 ls_parameter-value = ls_flight-fldate.
 APPEND ls_parameter TO e_portal_actions-parameters.
ENDIF.
ENDMETHOD.

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