I want to create a custom record field that converts a string timestamp field to date or datetime just to use it in user filters. I chose the real-time option but it seems something is wrong with that because when I tried with sync-time evaluation it works. This is the code:
datetime( left(ri!stringTimestamp, 4), mid(ri!stringTimestamp, 6, 2), mid(ri!stringTimestamp, 9, 2))
instead of ri!stringTimestamp I am using the respective record field
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That is one of the limitation in writing your own expression that evaluates in real time. There are only limited custom functions available.
The documentation has all the info and examples: https://docs.appian.com/suite/help/24.3/custom-record-fields.html