toLongWithBase - error in doc hasn't fixed since 2 years!

doc says: Level 1.4.1

Error Name: Symbol Not Found Error
Occurrences: 5
Devices:
    D2 Delta PX: 5.30

but bug has reported 2 years ago!!!

https://forums.garmin.com/developer/connect-iq/i/bug-reports/problem-with-string-function-tolongwithbase?CommentId=7b25ab73-badb-493c-82a0-2bccf4fdce11

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