How to import product variant through excel using X++?

Hi all,

I want to know how can we import product variant through Excel using X++ in Dynamics AX 2012..

If any one having sample code for this then please share it..

I refer this link 

http://gauravwaveq.blogspot.in/2012/10/create-product-variant-using-x.html

it is not working, can any one please help me.

Thank you