Have you tried using  ILT inside the IFF to compare v1 and v2  variables. 

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> On Jul 8, 2014, at 2:05 PM, "Dr. Fritz Luettgens" <[email protected]> wrote:
> 
> Hi,
> 
> year(col1)    turnover(col2)        info(col3)
> 2011        3
> 2012        6            +
> 2013        5            -
> 2014        7            +
> 
> I want to add to the info column  "+" or  "-"
> with the UPDATE command using the
> IFF function (IFF('.v1<.v2','+','-'))
> but cannot get it working because I think I
> need the year as reference.
> Is there a different function I can use ?
> Thank´s
> fritz
> 
> 


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