It wont really be that much effective if you are trying out to quit addiction on using up fake or no value money because you know that you arent losing anything even if you do lost.
Thats why it would be sensible that you should avoid gambling activity as much as you could if you are really that serious on quitting on it.
As long you are making yourself get exposed to gambling even using up demo money which it cant really resolve that addiction and get rid of it.
Real money Vs fake money does not help.
If one wants to have money - one should give a serious try to the work and save up as much as possible.