Error of taxtbox value

HI I my "glabal list " is dryneedling $30, but when is emplty will show earror, can anyone help tks.

Screenshot 2021-11-17 122921

Since the value returned will be $30, after splitting, the list will become:
Since there's only 1 element in the list, you can't get the 2nd index.

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thank you very much :blush:

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