How to bind slider to ABP variables?

I am creating a character editor (height, size of eyes, ears, etc.). Moved all animations to pose assets. In anim blue print I created maps, tied them to variables. Now changing any variable changes the appearance of the character. Did as in the lesson from YouTube, the link is below. Now I need to make sure that the sliders that are in the gui are tied to these variables, so that dragging the slider changes a specific variable and, accordingly, the character (height, ears, eyes, etc.). But I don’t know how to do it. Are there any articles/videos showing how to do this? Or maybe you know how to help me?