if you can get a reference to the blueprint actor, then you should be able to drag off of it and type “get sphere” (or whatever you named your mesh component). If you DONT see that, then you might not actually have a reference the the parent blueprint. If anything needs casting, it might be THAT, and then your mesh component should be an option.
BTW, this is not super important, but for future reference: naming the component “sphere” is a little confusing for people helping you, since there’s already an actual very common blueprint component called “Sphere”. It’s a good habit to name components like yours something like “Spheremesh” just to make things clear. Not a big deal, but it confused me at first. 