Hi CrimsonHawk,
If you don’t set a default value it will return as “none”. What you will have to do is change the variable type to class rather than a reference. You can see this when the color changes from blue to purple. Here is a screenshot of where you do this in the BP editor.
Once you have change the variable type to class you can set your default value to be “MainMenuWB”. That will allow the variable to return your Widget class instead of “None”.
Let me know if that helps,
Ed