Can you edit/write own Plays?

So here is the question: Is it possible to write own Plays for the Playcall System in Nba 2k12? Especially in My Player mode it would be very nice, if you can edit plays for your My Player. I think it isn´t possible within the game but maybe there is somebody who knows where to find the Plays in the filesystem of NBA 2k12. For myself i got no idea where to look.

And maybe we can talk about this possibility in the next series of 2k13...that´ll be a very nice feature and it will be a huge step to a real simulation of basketball.

And maybe we can talk about this possibility in the next series of 2k13...that´ll be a very nice feature and it will be a huge step to a real simulation of basketball.

That'd be something for the NBA 2K13 section.

@Andrew: Yeah, that´d be something for the 2k13 section.

But that was only part two of the question which isn´t as important as the first part.

Isn´t there anybody who can help me with this?

No, it's not possible in NBA 2K12.