Error while calling Level-Hierarchy in Analysis for Office

Hi Experts,

I am using MS Office 2010 & analysis for version v 2.2.1. I have created a simple level hierarchy in my calculation view using dimensions, 1) Customer No, 2) Characteristic. Now I called this calculation view in excel using analysis for office. It works fine initially but as soon as I try to use the hierarchy it gives below error.

Your quick help is appreciated.

Regards

Jitendra