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API > API/Plugins > API/Plugins/ControlRigDeveloper > API/Plugins/ControlRigDeveloper/UControlRigBlueprint
References
| Module | ControlRigDeveloper |
| Header | /Engine/Plugins/Animation/ControlRig/Source/ControlRigDeveloper/Public/ControlRigBlueprint.h |
| Include | #include "ControlRigBlueprint.h" |
FRigHierarchyModifiedEvent & OnHierarchyModified&40;&41;
Remarks
Returns the modified event, which can be used to subscribe to topological changes happening within the hierarchy. The event is broadcast only after all hierarchy instances are up to date The event used for subscription.