Regarding Attachment in User decision activity:SOFM

Hi all,

I have created a smart from in my ABAP code and converted the form to PDF and then OBJECT key for creating attachment.

My object key is FOL33000000000004EXT35000000000164.This object key is in abap code in field of table with format

SWR_ATT_ID-DOC_ID.This abap code is in my method in my z-Business object used in workflow.

Now i need to send this key value to SOFM in workflow this SOFM is in BO format in workflow.

As a result type conflicts and SOFM is not getting instantiated in Workflow.

I need to get thsi key value in my workflow SOFM.

Please guide.

Thanks.