Sub category for UPROPERTY in FSlateWidgetStyle

In my FSlateWidgetStyle class I would like to organize my properties in categories and sub-categories.

For UFUNCTION, in general, you can do this by separating categories and sub-categories using the | char.

In my
struct KSGM_API FKDialogStyle : public FSlateWidgetStyle
{

/** @brief The dialog background brush. */
UPROPERTY(EditAnywhere, Category = “Appearance|Dialog”)
FSlateBrush BackgroundBrush;

}

I’ve tried to separate categories using the | char. Apparently it does not create sub-category Dialog but it creates a category named Appearance|Dialog.

There is a way for properties to create sub-categories ?

Txs for your help.
Have a nice day,
D.

I’m having the same issue.