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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterial > UMaterial::PropagateExpressionParameterChanges

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UMaterial::PropagateExpressionParameterChanges

A parameter with duplicates has to update its peers so that they all have the same value.

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References

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

Syntax

virtual void PropagateExpressionParameterChanges
(
UMaterialExpression * Parameter
)

Remarks

A parameter with duplicates has to update its peers so that they all have the same value. If this step isn't performed then the expression nodes will not accurately display the final compiled material.

Parameters

Parameter	Description
Parameter	Pointer to the expression node whose state needs to be propagated.

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