Hi friends! I need some assistance with setting variables within my power app. I will try to explain this as briefly as possible...
I am building a multi-screen form app that stakeholders will use to alert my team that an interview needs to be scheduled. Datasource is a Sharepoint site and the app will allow for both submitting new requests and updating existing requests. Here is the first screen of the app:

I'm having no issue with adding new items. The problem I'm running into is when current items need to be updated, and I think it is because of the variables I have set on some of these screens.
Screen section 1 is below with a tree view. The user will only navigate to ScreenSection1 when they are adding a new request:

The user navigates to ScreenSection2 once the Next Screen button is clicked on ScreenSection1, or an item is selected from the gallery on Screen1to edit:

The values are showing up blank when editing a request, presumably because I have no variables set because the user skips over Screen1 when editing an item. So, my question is this - how do I get the form data to show up on this screen for an item that has already been entered and needs to be edited (i.e. it is selected from the gallery on Screen1)?
TIA!