Error Inner exception: The value assigned to property 'DateTime' is not valid: '24/02/2015 17:24:05'

i use biztalk 2010 and when my orchestration prepare my msg to send it to wcf sevice with my dynamic port send-receive i get this error

Exception thrown from: segment 3, progress 6 Inner exception: The value assigned to property 'myDateTime' is not valid: '24/02/2015 17:24:05'.

Exception type: InvalidPropertyValueException Source: ### Target Site: Microsoft.XLANGs.Core.StopConditions segment3(Microsoft.XLANGs.Core.StopConditions)

DATA: 2015-02-24T18:24:05