Trigger volume Reference Instance editable variable

Make sure your game mode in your project settings => “maps and modes” set the default player correctly to BP_Bot

It should pass the cast correctly

overlap


end overlap

As for setting the widget reference inside of a blueprint function library, you need to make a function that takes in an input of type widget then you need

Revised hud and functions to work with a bp library

Hud:

Activate


Deactivate