Niagara Map For Not Working Correctly and How to do array add in niagara's custom hlsl, I didn't find any hlsl function for it.

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Niagara doesn’t report any error, but it’s just that my function isn’t working correctly. Theoretically, he should be giving me an array, but I’m checking later to see if it’s 0 or 1. I can’t quite remember. Anyway, map for shouldn’t be working correctly.

I’ve referenced this, but it doesn’t work.