Total number of displayable pages available on the surface.
This numeric value (int32) belongs to FInteractionUIEntryPresentation under InteractionUI.
The value is calculated after page filtering. Pages with no displayable commands are skipped, so the total can be lower than the number of authored marker ranges.
UPROPERTY(BlueprintReadOnly, Category = "InteractionUI")
int32 TotalPages = INDEX_NONE;