Hi,
no indeed, it can’t be done as implemented as the colon will be passed in the parsed string and this makes the filename non-valid. If you only need the date (not time) you can use a special formatter like $DATE:dm0$.
If you need both date and time, we could add another special formatter, smthg like $DATE:dt$, dt being short for datetime. Would propose it converts to a string YYYY-mm-DD_HH-MM-SS.
Just did it, in fact:
11:00:38: Running command: parse
11:00:38: String in: $DATE:dt$
11:00:38: String out: 2023-03-16_08-50-20
Would that be what you are after?
Cheers,
C.