Need a regular expression for Y, N or U
I have tried ^[YNU]{1}*$ , which I think is correct, but it is not working.
Full line is: $WAFV_Errors .= WAValidateRX(((isset($_POST["CareIndependant"]))?$_POST["CareIndependant"]:"") . "","^[YNU]{1}*$",true,18);
Please help if you can.
Thanks,