if the if/elif/else is in another chapter - portal doesn’t remember the choice from the previous chapter - in portal open in preview - story modifiers/flags - a choice some of the flags used in the if/elif/else to simulate the remembered choice - this way you can test it in the portal.
Or play it in the app - the app does remember choices from the previous chapter.
If it will even with this testing not work most likely there is something wrong with the conditions - for this, I would need to see both the choice and the if/elif/else