@Richa Prabhakar Below is the response received from our team on this query. Hope this helps.
Currently, ADT does not natively support computational expressions in DTDL models. However, you can configure ADT to emit events during twin change or lifecycle events, which can then be handled by Azure function event handlers that contain expressions.
Do let us know if you have any other queries.
Update: Our product team already considered this feedback for implementation for 2022. Please see https://feedback.azure.com/d365community/idea/a78b15a2-f124-ec11-b6e6-000d3a4f0da0
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