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How to Dim and Brighten Lights and Text Render?

Hello, I am trying to figure out how to make it so I can brighten and dim a light using certain keys? I am also trying to figure out how to use a text render that keeps track of how many times I have turned the light on and off?

Product Version: UE 4.12
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asked Oct 30 '16 at 08:29 AM in Using UE4

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Hiwari04
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