[otrs] ITSM Change Condition How to set a rule to set change state on ActualStratTimeReached

Hi folks I'm tring to find a solution about this issue: I'd like to set a Change Condition moving the change state to In Progress by means of two conditions meet: the actual change state is 'Approved' *and *the ActualStartTime is reached. Actually if I select the ActualStartTime as attributes of condition, I have to put a text value to compare. It's sound like I can't have a parametric value for the right-side of expression and I suspect it's not work. Really I need to have a mechanism like Notification where the ActualStartTime is compared to the actual system time and action are taken accordingly. Any suggestion or a better explanation on the Condition handling on OTRS ? -- * Stefano Boccanera*