2 errors occurred while validating:
[1/2] error: `USub()` not supported
or String(value='s') is incorrect type
--> main.sml:2:30
     |
   2 | UserId: str = UDFWithUSub(foo=-'s')
     |                               ^ currently only the USub UnaryOperation is supported in arguments
                                     | the operand must be of type `int` or `float`
[2/2] error: invalid argument type: `UnaryOperation`
--> main.sml:2:30
     |
   2 | UserId: str = UDFWithUSub(foo=-'s')
     |                               ^ expected type `Number`