I've been having some difficulties with a plasma object, and instead of trying things one by one and patiently waiting for the preview to load, I created this:
Use it to fiddle with plasma settings in real time.
Updated:
http://www.mediafire.com/file/bkv83tah2 ... menter.zip
Limitations:
I wanted to have controls for Filter colours, strengths and cut-offs, but there are no actions that I can use to control those values (yet).