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Confusing error: One material parameter working, but not 2 others. Same object, same material.

The top scalar parameter is updated by a float track, the two vector parameters on the bottom by event tracks. The event tracks trigger the play sound nodes just fine but the following vector parameters do nothing. I've tested my material manually and everything checks out when I change the values. Thanks much for any help.

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My Material Param.

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Product Version: UE 4.8
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asked Mar 26 '16 at 04:54 AM in Blueprint Scripting

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