Custom Object UProperties not showing up in Details Pane (Custom Material Instance)

I’ve written a Class for a customMaterialInstance that has more properties than the standard Diffuse/Emissive Boost. I have marked these public variables with “UPROPERTY(EditAnywhere)”, but they aren’t showing up in the Details Pane. The Factory I have that creates the Object works, but when I double click it to edit it, it’s just the default material instance details pane.