If you pass an argument to sort on to the SortEx and pass also 'nocase' it breaks if the thing to sort on cannot be case insensitive. This works: r=SortEx(sequence, ( ( 'companyName' , ) , ) ) # and this r=SortEx(sequence, ( ( 'companyName' , 'nocase' ) , ) ) # and this r=SortEx(sequence, ( ( 'modificationTime' , ) , ) ) # But this breaks! of course r=SortEx(sequence, ( ( 'modificationTime' , 'nocase' ) , ) ) Sensible. But suppose that one really doesn't know what one is sorting one? * If its a string property, I want it case-insensitive. * If its a date property, don't pass the 'nocase' thing Maybe there is a way to do this, but I don't know how. So how? If there isn't a way to do this, can I suggest a syntax like this: r=SortEx(sequence, ( ( REQUEST.foobar , 'nocase' , 'anyproperty' ) , ) ) ...or... r=SortEx(sequence, ( ( REQUEST.foobar , 'nocase_nocomplain' ) , ) ) Regards, Peter