OpenEuphoria

I'm sorry, I'm probably so dense today.
I can't see what's wrong in this little piece of code:

include std/math.e 
 
function minmax(atom min, atom max, atom val) 
    atom temp = max ({min, val}) 
    atom res = min({max, temp}) 
    return res 
end function 
 
? minmax(7.2,99,6) 

thanks in advance, kobi