Passing a file control to be uploaded in sharepoint

Hi,

K2 5.2

Scenario: Using  Word Document Generator Service Broker ,genrating a word document,Now passing that genrated document(from virtual directory(server)) to a file control.i want to upload that file attachment in sharepoint.

Issue: File is not getting uploaded in sharepoint, i also tried saving the file in smartbox but that is also not happening,also on clicking the file control file attachment is not getting downloaded, however i can see that document is uploaded in the file control.

Can any one please suggest any solution?

Thanks in advance