Hello,
I would like to retrieve the value of a variable of a spin box widget for use in another blueprint.
Thank you in advance.
I suggest that you create a widget blueprint, put a spin box widget inside that widget blueprint, create function that will return the value of that spin box widget. Go to the blueprint that control your hud, such as your player controller blueprint or hud blueprint, create an instance of that widget blueprint, assign it to a widget variable of the same class. Then you can retrive the value of the widget by calling the function of the widget blueprint by using the widget variable.
More information can be found at these Unreal tutorial: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums
There should be at least 2 tutorials that directly teaching you all the basic stuff you need to know about UMG.