Dynamically set radio buttons

I have a Basic MSI project. Within it, I have a dialog that has 2 radio buttons on it. When the user selects one of the radio buttons, then hits Next, I want the subsequent dialog that comes up to set its radio buttons based on the state of the previous one's radio buttons.

So, dialog 1 has 2 radio buttons, dialog 2 has 2 other radio buttons. The user selects one of the buttons on dialog 1, clicks Next, and then dialog 2 is shown. Upon showing dialog 2, the radio buttons in dialog 2 are set to the proper value based on what was set in dialog 1.

I can't quite figure out how to set the radio buttons in dialog 2 based on dialog 1.

I should also mention that the radio button groups are associated with different properties, so I can't share the properties.

Hopefully that makes sense....

Thanks!