Correct way to set GXDate/GXTime/GXDateTime

Hello,

I just started with you Python library. I'm trying to set some DateTime for a "Single action schedule" (class_id = 22) and can't find a correct way to set those. If i use the "Datetime" python format is OK, something like this:

"GXDateTime(datetime(1900, 1, 1, 0, 0, 0, 0), datetime)"

This limits me since i can't set anything that falls outside of this format, like:
* Don't care values.
* Last day of month/year.
* Anykind of dayofWeek.

So, is there a way to set those to make it work with the schedule class ID? Thank you in advance.

PS: I've been doing some research in those classes and found out that the base class, GXDateTime, sets dayofWeek to 0 at start and never uses again, so maybe can't work.