Need All HCM FPM FORM fields in my workflow containers

Hi Experts, I am developing a workflow for creation of org unit or Position from FPM form. In last step of my workflow I have to write a custom task to create org unit or position in background infotypes with form fields. In workflow i am geting only few fields from FPM form via PROCESS_OBJECT. Then I tried to import form field in my workflow container via standard task TS17900110, but there is a problem with this standard task that I can pull maximum 3 fields to my WF container. Need All HCM FORM fields in my workflow If any body knows any other stadard task or any logic to get all form fields in my workflow, it will be great help.