whole animation not being played

I have the animation done through Maya and brought the FBX file to unity. Here is my code to calculate the speed of the swipe:

Vector2 speedMeasuredInScreenWidthsPerSecond =(Input.touches[0].deltaPosition / Screen.width) * Input.touches[0].deltaTime;

Now I wanted to take speedMeasuredInScreenWidthsPerSecond and use it to increase the animation speed accordingly like this:

animation["gmeChaAnimMiddle"].speed=Mathf.Round(speedMeasuredInScreenWidthsPerSecond.magnitude); animation.Play("gmeChaAnimMiddle");

but now the problem seems only the last frames of the animation is being played not the whole animation