I have asked the community how I might write JSL code to work around our sharepoint system. I have some JSL code for getting the "open file" window to open but the field for auto-populating the file name into the file field seems to be a bit weird. I can put the correct hyperlink into the field but punctuation in the file name is changed.
https://community.jmp.com/t5/Discussions/JSL-obtaining-access-to-excel-file-in-sharepoint/m-p/85115/...
Please see my community support discussion linked above.