CreateEditorOnlyDefaultSubobject Equivalent for Blueprints

Hi guys,

What I curently miss is an equivalent for the [FONT=Courier New]CreateEditorOnlyDefaultSubobject flag for blueprint classes.

I want to be able to create a Billboard Component in a blueprint class, but the component itself is only visible in the blueprint editor of the class itself, not in the level editor nor other blueprint classes

Can be good but how handle that nicely in the blueprint editor ?
It could have been only a boolean “IsEditorOnly” but unreal manage two component array, I don’t know why.