To change the date I type:
1.Import-Module SMLets
2.get-scsmobject -class (get-scsmclass system.workitem.incident$) -filter ‘Id = IR158′| Set-SCSMObject -Property CreatedDate
3.Value: 03.01.2012 11:00:00
It's ok
but when Value 03.13.2012 11:00:00
it do not work
why?