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API > API/Plugins > API/Plugins/RigVMDeveloper > API/Plugins/RigVMDeveloper/URigVMController
Description
The Modified event used to subscribe to changes happening within the Graph. This is broadcasted to for any change happening - not only the changes performed by this Controller - so it can be used for UI Views to react accordingly.
| Name | OnModified |
| Type | function |
| Header File | /Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Public/RigVMModel/RigVMController.h |
| Include Path | #include "RigVMModel/RigVMController.h" |
| Source | /Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Private/RigVMModel/RigVMController.cpp |
FRigVMGraphModifiedEvent & OnModified()