How to Refresh the Material Graph Editor

Hi !

In editor, I’m creating new node in an opened Material with c++ as:

void MyFunction::CreateNode(UMaterial* MyMaterial)
{
    UMaterialExpressionScalarParameter* ScalarParam = NewObject<UMaterialExpressionScalarParameter>(MyMaterial);

    MyMaterial->Expressions.Add(ScalarParam);
}

I would like to know if it’s possible to refresh the material graph editor to display the new created node?

The node spawns if I close and reopen the Material, but is there another way?