Thanks Ray,
I have already used server validation but I can't find the right formula in the server variable field:
Validation type: number (international, min: 0; max: empty; decimals: 0)
Validation server:
(((isset($_POST["myselect"]) && $_POST["myselect"] == "8") && ($_POST["field1"] <100 && $_POST["field2"] <200))?$_POST["field1"]:"-1")
This simple doesn't work.
Perhaps I am missing something in the syntax (parenthesis).
Do this should work?
TIA
Tony