Changing values in Bex

Hello experts ,

I need help converting values in Bex .

When I run Bex query , I am getting values for fiscal year 2012 and 2013. We have data in Info cube for fiscal year 2012 and 2013 .

But in bex , I would like to convert in such a way that the values for 2012 will appear as 2011 and 2013 as 2012. I mean i need to push the values to fiscal year -1 after executing the report . This query has no manual selection variables .

Any help appreciated .

Thanks

Manoj.