How do you enter validation rule for this?

[slenderman1]

If I wanted to make the values in "x" field to be greater than the values in "y" field. How would I write that?

Thanks

[ranman256]

You wouldn't put it in the validation rule field,
youd have a 'save' button to validate the fields.

sub btnSave_click()
select case true
Case txtBox1<txtBox2
  MsgBox "bad fields"
case isNull (cboBox )
   MsgBox "you must select a city"
case else
   Docmd.close
Ens select
End sub