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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterialExpression > UMaterialExpression::UpdateMaterialExpressionGuid

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UMaterialExpression::UpdateMaterialExpressionGuid

Generates a GUID for this expression if one doesn't already exist.

Windows

MacOS

Linux

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpression.h
Include	#include "Materials/MaterialExpression.h"
Source	/Engine/Source/Runtime/Engine/Private/Materials/MaterialExpressions.cpp

Syntax

void UpdateMaterialExpressionGuid
(
bool bForceGeneration,
bool bAllowMarkingPackageDirty
)

Remarks

Generates a GUID for this expression if one doesn't already exist.

Parameters

Parameter	Description
bForceGeneration	Whether we should generate a GUID even if it is already valid.

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