Forcite dynamics simulation using NVE

Dear Sir or Madam:

When I use Forcite to conduct dynamics simulation in NVE ensemble (using current velocity), after a certain initial velocity was assigned to atoms in the system, even if I set the temperature to 298.0K. but the stranging thing is that when simulations finished, the temperature curve shows that the temperature was not the targeted temperature. Is that normal?

Thanks a lot in advance!

Best regards,

Weifu