how to replace value of field when field is empty?

On my left schema, sometimes for the StartTime we will have no value whatsoever. Some examples of valid values would be:

When the input is blank, simply <StartTime></StartTime> the output I'd like to have is midnight, or <StartTime>0000</StartTime>

I understand that I can do this through a regular scripting functoid, but is this possible to do without code?

Are there functoids which simply replace the original contents of the field with something else, allowing for further processing?

Solution

Sure, just use a combination of Length+Equal/Logical Not/Value Mapping Functiods to pass either the received value (Length != 0) or 0000 (Length = 0).

Length -> GreaterThan(0) -> Value Mapping/Source -> Target

--and--

[Length -> GreaterThan(0)] -> LogicalNot -> ValueMapping/"0000" -> Target