Calling WebDynpro input screen from within an abap Function module / user

Hi,
I am posting SAP data with a BAPI from an Web Dynpro Application.
In the Bapi I must use an BADI/User -EXIT to add some infornation.
Today this is done by calling an Dynpro in a function module. This creates a pop up, data is filled and posted on commit.
How can I get a Web Dynpro application to display this popup without showing the "call screen without connection " error ?
Thanks for any help.
Marcus

>
Deok-Byung Lim wrote:
> Here is an unofficial way to get current WD component.
> (WDR_TASK class is not for customer)
>
> DATA lo_wdr_component TYPE REF TO cl_wdr_component.
> lo_wdr_component = wdr_task=>application->component.
>
>
> then.. attach component usage and popup your WD screen
>
> BUT IT'S NOT OFFICIAL!!
This approach is absolutely NOT supported nor recommended by SAP.

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