How can I activate a specific button within a widget using path tracing?

I’m create a custom solution to use OSC TUIO to interact with 3D widgets and am fairly new to Unreal. I convert normalized x and Y coordinates to screen coordinates and then use a Path trace to find elements under this location. This approach works well for getting the top level ray blockers and I can easily find the widget, but I can’t figure out how to access the specific button under that location. The widget includes several buttons and I need to determine which one. Any help would be greatly appreciated. Happy to add more detail if it helps.