How Do I Access a Variable from a .cpp from within an Actor Blueprint?

Hi! I have a .cpp file that defines a TArray within a class. It looks like this:

UPROPERTY(BlueprintReadWrite, VisibleAnywhere);
const TArray64<uint8>& ImgData = imageWrapper->GetCompressed(5);

I have added the UPROPERTY line as I want to access this TArray variable in a separate actor blueprint, but when it comes to trying to reference this variable from within the actor blueprint, I’m not sure where to start.

How do I do this? Any help is greatly appreciated. Thank you