So I guess you can’t really change these parameters on the fly. The whole idea is to expose as variables the ability to resize the billboard for animation purposes. What is interesting is that I’m able to expose a parameter that sets the BaseSizeX/Y properties and when I hit BUILD it will show the correct adjusted size in the editor. As soon as I play, however it will be set back to the defaults. It is like the properties are being set under the hood but the rendering engine doesn’t understand that it changed to update the vertices or whatnot…
So, has anyone else figured out how to use Billboards that can be adjusted at runtime through blueprints??