[Help-gnu-radius] ...

[Ciprian Nica]

Sorry, the example was not exact. 
The rewrite function is like this : 

string function()
{
 if (%[A1]>0)
  {
   return "V3_0";
  }
 if (%[A2]>0)
  {
   return "V3_1";
  }
return "V3_2";
}