is Random Variation on each run even possible in FF?

I must be missing something... Such simple functionality as default generation of new variation of Fractal Clouds or Noise filters is missing in FF. A user is forced to go into settings and manually change Variation value.

Is it possible to mimic default Photoshop filter behavior (by scripting or otherwise) and force FF to produce random variation on each run (CTRL+F).

I (and I think many other FF users) will greatly appreciate any code snippets or tips on how to achieve it. Frankly without this feature FF becomes nearly useless for me due to reliance of Photoshop actions in my workflow.

TIA