Can't plot stress or strain curve!!

[sreekar]

Hi,
I am using Ansys 11,

I am going through example 9 in this tutorial:

http://www.aa.washington.edu/courses/aa430/ansysinfo/grady/ANSYS_Tutorial.pdf

I can plot the y displacement curve, but when I select y component of stress or strain in time history post processor it doesnt produce any values!

Can someone help me! thanks!