How do I do widget inheritance with variables?

I have created a blueprint widget that is my parent. It has a variable that I would like to be able to adjust in any widgets that inherit from it. I have set the Instance Editable property to True on the variable, but it is not showing up in the Variables list of any widgets that inherit from my parent blueprint. How do I get this to work?

On the top right of the my blueprint panel there is a little eye, if you click it a drop down will have a checkbox for show inherited variables. Also even if you can’t see it, you can call a variable that is part of that class any time, by right clicking anywhere on your grid and calling set or get for that variable.