Reviving this thread because it was linked to from How to return the answer of a question to another question.
@Saad in this specific case I would recommend making the values for your choices the literal values 1 and 2 or something like game1 and game2. That will work any time you have a fixed set of choices you want the user to choose from.
If the number of choices isn't known ahead of time (e.g. it comes from a repeat), you can make a small modification to the XML as described here.