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Changing dynamic material instance parameters in blueprint ONLY working when run as Standalone Game

In my project, I have a dynamic material instance set up to change the colour of a laser sight when locking onto a target. Weirdly enough, it works perfectly when I launch the game as Standalone Game, but in any other way (including when the game is packaged), the particle doesn't change colour.

When run as standalone game: alt text

When run from packaged executable: alt text

Construction script where the dynamic material instance is defined: alt text

Event graph where the colour parameter is changed: alt text

Product Version: UE 4.15
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asked May 17 '17 at 09:19 PM in Blueprint Scripting

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MenacingMecha
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Solved by moving the definition to trigger on BeginPlay; I guess construction scripts are only triggered in-editor

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answered May 17 '17 at 11:50 PM

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MenacingMecha
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