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API > API/Plugins > API/Plugins/RigVMDeveloper > API/Plugins/RigVMDeveloper/URigVMController
Description
Opens an undo bracket / scoped transaction for a series of actions to be performed as one step on the Undo stack. This is primarily useful for Python. This causes a UndoBracketOpened modified event.
| Name | OpenUndoBracket |
| 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 |
UFUNCTION (BlueprintCallable, Category=RigVMController)
bool OpenUndoBracket
(
const FString & InTitle
)