hey kkrpraksa,
Based on what do you think integration doesn't work? You are looking just on integrated signal. When I connected sinus signal from simulate signal into integration, and I displayed integrated signal together with original signal, thery were phase shifted. If you look just on integrated signal, you can't really tell that it is not integrated, because you don't know the fhase of original signal.
However, amplitude of the signal is low. (But i think it is described in help how it is calculated, but i'm not sure now).
regards,
stefo