Camera set boolean

I am using arv 0.8. When attempting to use camera.set_boolean (python3.8) it seems to always end up setting the parameter to true.

For example, I am trying to set (for the Line3 input) LineInverter=false in a Dalse Linea Lite Color 2k linescan. I have tried “false” “0” “False” and when I use arv-tool to check the value it returns true.

When I do not attempt set this value it will remain false.
Regards,
Paul