Martin,

You can use the max() function of visual foxpro to determine which of your express is the maximum one.

Try to make a prg example nmax.prg and from it, you can now make SQL statement to determine which one is maximum.

SELECT nmax(a.one,a.two,a.three,a.four) AS maxvalue FROM one a INTO CURSOR sample

*************
* NMAX.PRG
**************
PARAMETER one,two,three,four
nmax=MAX(one,two,three,four)
RETURN nmax


REYMUNDO A.ESCOTE