Convert Smartform into PDF and then add as attachment in User Decision WF

Hi All,

I am stuck with one requirement where I need to convert Smartform into PDF and then add as attachment in User Decision in workflow. I am aware that we have to use Program Exit under User Decision for this but I am not able to find proper way out.

I am calling 'CALL FUNCTION 'SSF_FUNCTION_MODULE_NAME'  for Smartform under Class which I have created for Program Exit but not able to proceed. Please do share with Binding Info also.

Please help me out in this.

Thanks