Hmmm... is this the same question as by PM?
Are you using CP6 or later? Use shape buttons instead of buttons, and display them for the rest of the project. In that case they'll have a unique ID. Do the same for the tick marks that you want to display. Do the same with the Next shape button, that is initially invisible. This will simplify a lot.
You still need a user variable for each choice, with a default value of 0. Attach a standard advanced action to each shape button that has two decisions:
- 'Always' is a mimicked standard action (IF 1 is equal to 1) that toggles the user var to 1 and shows the hidden tick mark (once it is visible, this will be the case on all slides where the menu is visible
- 'Checking' tests if all user variables are set to 1 (AND condition) and shows the Next shape button if that is the case.
Lilybiri