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API > API/Runtime > API/Runtime/MovieScene > API/Runtime/MovieScene/FEntityAllocation
Description
Retrieve this allocation's serial number. The serial number is incremented whenever a component is modified on this allocation, or when an entity is added or removed. Typically used for caching component data on a per-allocation basis
| Name | HasStructureChangedSince |
| Type | function |
| Header File | /Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntitySystemTypes.h |
| Include Path | #include "EntitySystem/MovieSceneEntitySystemTypes.h" |
bool HasStructureChangedSince
(
uint64 InSystemVersion
) const