Cannot dynamicaly set color of Post Process Volume material

Development Programming & Scripting Blueprint
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1

Hi,

I made a test material and use an instance of it on a Mesh Component and as a Post Process Volume material

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I can change its color dynamicaly at runtime if the material is not set as a Post Process Volume material

once I add it to the Post Process Volume, the following BP code does not work anymore

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I still can change the color of the instance in the editor, but at runtime it does not work

am I missing something ?

thanks for your help

2

nobody?

I mean this is such a simple use case