Using SAP Workforce Performance Builder (WPB) with LibreOffice

I’m using SAP Workforce Performance Builder (WPB) to record transactions in SAP. I want to output work instructions, but the default output is .doc. It doesn’t work as WPB can’t find Word on my PC. Is there any way to make WPB recognise LibreOffice as the output file type? I can’t find an option in WPB to change the output type.