[Ovmsdev] VW e-Up: 12V DCDC inverter start

[Soko]

Hey guys & especially the VW e-Up ones,

I was wondering about the current status of writing to the e-Up.
I currently in "need" to start the 12V DCDC inverter when the car is off 
and locked. Is this currently possible or at least feasible?
Are there any detailed infos when this inverter starts automatically. 
Apparently its not just a question of the current 12V voltage...

Thanks heaps
Soko