In reference and reply to another visit ... for general use.
Ask the "unit system specialists" to plug your unit [make it work].
...added another tool.
Assuming the function is an "Engineering formula" already in the appropriate unit system, and you want to display ... then you can't use the Mathcad built-in system, Create a "User Unary UnitResult" [green].
this community does not sequence the same work sheet like Akiva:
*.mcd(2) ... and so on.