>I want to extract the string between the asterisks, or between an asterisk and the tilde if it's the last occurrence. If I use StrExtract() with occurrences from 1 to 4, I get "4" "3" "23" and "0" as results in the example below.
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>m.test = "HL*4*3*23*0~"
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>This evaluates to "" because there is no second asterisk for the fourth occurrence:
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>m.String = STREXTRACT(m.test, "*", "*", 4)
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Why don't you just use ALINES() with the parse character parameter to break the whole thing up at once?

Tamar