&waitimage &poster &waitmessage not working with Electron

Everythings is in title, or maybe I'm not using it good...

Can I use a local image ?

Thanks

here is my cmdline:

`start ElectronCapture.exe -w 1920 -h 1080 -x=1920 -y=1080 -u="https://vdo.ninja/?view=xxxx&solo&fps=50&na&bitrate=8000&codec=H264&waitmessage=TestMessage" --hidecursor`