Copy Function - Have to develop a FOX formula. Advise needed.

Hello Gurus,

I am new to FOX formulas.

I have a requirement from user. it is as follows:

The present scenario is as follows:

user wants to copy the forecast data as follows

Quarter1/2007 to Quarter1/2008

Quarter2/2007 to Quarter2/2008

Quarter3/2007 to Quarter3/2008

Quarter4/2007 to Quarter4/2008

now we use the standard sap planning function COPY and we have variables 8 variables for the above and 2 variables for the fiscal year source and target.

Now the requirement is if there is any data exists in quarter1/2008 then don't copy from quarter1/2007 based on the following combination costelement,costcenter,keyfigures.

I am doing a qtr/qtr copy - condition is version-value type.

Thanks in advance for your help.

Senthil