Hate to be skeptical, but I do not see how this could even be possible….
First you would have to track your user (whomever they might be) to the casino.
Then you would have to be able to track them THROUGH the casino software.
Then you would have to be able to track HOW MUCH they deposited through the casino software.
Unless you had casino API’s / DLL’s or access to their databases, this would not be possible at all as I see it.
I’d like to be proven wrong, though, because I am a coder and if it were possible, I would definitely try.