Would it be possible to add a Test input at the beginning of any logic flow, or within an expression. Similar to the Test feature within aggregates or SQL. For expressions it could be helpful when there is data processing or functions involved. For logic flows it would be great to be able to enter a test value at the beginning or somewhere in the middle of the flow and see how it behaves through the logic. Doing this via debugger is not always as direct to test, and sometimes logic is only triggered at certain instances which can be challenging to trigger during debugging. 

It could be similar to having a debug option to start from a location within the code, with a data input set. Rather than having to trigger the logic from the front end.