Replace Member - error solution exception

Any ideas why this happen?

ReplaceMember_error.gh (61.5 KB)

It seems your first list has some null items…

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Hi @HS_Kim,

Thanks a lot for helping me find the null item, didn’t expect that happened.

I wonder if there’s a way to retrieve the null index (not replace null)?


ReplaceMember_error_re.gh (60.0 KB)

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