WD Interactive form error

Question

I have a open a pdf file inside a interactive form.
i bind the datasource with context and templatesource:FILE.PDF
what is the problem here?
The following error text was processed in the system DVO : Function module does not exist
The error occurred on the application server jade_DVO_00 and in the work process 2 .
The termination type was: ERROR_MESSAGE_STATE
The ABAP call stack was:
Function: FUNCTION_IMPORT_INTERFACE of program SAPLSUNI
Method: CREATE_PDF of program CL_WD_ADOBE_SERVICES==========CP
Method: IF_WDR_VIEW_ELEMENT_ADAPTER~SET_CONTENT of program /1WDA/LADOBE==================CP
Method: IF_WDR_VIEW_ELEMENT_ADAPTER~SET_CONTENT of program /1WDA/LADOBE==================CP
Method: IF_WDR_VIEW_ELEMENT_ADAPTER~SET_CONTENT of program /1WDA/LSTANDARD===============CP
Method: IF_WDR_VIEW_ELEMENT_ADAPTER~SET_CONTENT of program /1WDA/LSTANDARD===============CP
Method: IF_WDR_VIEW_ELEMENT_ADAPTER~SET_CONTENT of program /1WDA/LSTANDARD===============CP
Method: CONV_VIEW_INTO_VE_ADAPTER_TREE of program CL_WDR_INTERNAL_WINDOW_ADAPTERCP
Method: SET_CONTENT_BY_WINDOW of program CL_WDR_INTERNAL_WINDOW_ADAPTERCP
Method: RENDER_WINDOWS of program CL_WDR_CLIENT_SSR=============CP

Answer 1

what i did is that.
I use Call Service to call my FM.
My FM hase a table parameter "int_pdf" of type TLINE(SAPscript: Text Lines).
After Call service, it create the context for me.
I bind the datasource property of my Interactive form with context put do work fine.
What i should do to allow the pdf file open?
BR,
Ali