Thank you for your reply, Ashish.

I'm afraid this link doesn't help because I already applied the variable elastic modulus along the thickness through an APDL command in Ansys WB and I was able to get the results. However, I don't know how to PLOT the contour of variable elastic modulus on the body. When I use Material Plot, it showed me the default material properties (constant elastic modulus) instead of the variable elastic modulus. The code which is written under material, deletes the default material and assigns the variable elastic modulus to the elements (the valuse of elastic modulus varies radially). I need to see the contour plot of the values of the variable elastic modulus on the model. 

I would appreciate any help.