Date/Time Field assignment problem

Hi

I am using SC 5 and having trouble with assigning date/time to a sc date/time field.

I have a field called estimated_starttime of type date/time in SC.

format = ‘yyyy-mm-dd hh:ii:ss’

when i try to assign new values to this field after onAfterUpdate event i only get the DATE part not the time.

Example: if i do this:
{estimated_starttime} = ‘2014-04-09 17:17:00’ then i only get ‘2014-04-09’ on input textbox. i lose the hh:ii:ss part.

Any help would be appreciated.

Thanks