To me it looks like your reference for WBP Quiz Box in your HUD is calling something other than the widget you are attempting to modify. Where are you setting WBP Quiz Box? Is it possible that you have multiple of these widgets existing in the world and you are referencing the incorrect one?
You are using a 3d widget component, yes? If that is the case then creating the widget on the end of your last image there is not actually the reference you want. You would want to use the quiz box variable you set initially as that is the actual 3d widget components widget reference. You do not need to create the widget on the end of your last image.
That widget component is exactly what you need. Drag that into your graph. Off of that you can get the widget object(I am not at my pc and cannot remember the exact name so bare with me). You should be able to cast to your widget class after and then run the event from there. Hopefully that makes sense with my mobile capability. If not, try searching “get widget from 3d widget component” and that should lead you to similar things as ive said here.
