JQuery Validation

I have a select "ArrearsLHOLocation" that has an option "None Selected" with a value of -1 and all other selectable values are greater than 0.

Here is the rule defined in my javascript

    $("#ArrearsLHOLocation").rules("add", {
        min: {
            depends: function (elem) {
                return $("#rbArrearsLHO[value='True']").is(":checked") ? 0 : -1;
            }
        },
        messages: {
            min: "You have stated that the applicant/coapplicant have LHO arrears but you have not stated where!"
        }
    });

Here are the watches as observed in Chrome.

 $("#rbArrearsLHO[value='True']").is(":checked") ? 0 : -1: 0
 $("#rbArrearsLHO[value='True']").is(":checked"): true
 $("#ArrearsLHOLocation").val(): "-1"
 $("#ArrearsLHOLocation").val() >=($("#rbArrearsLHO[value='True']").is(":checked") ? 0 : -1): false

This page successfully submits, incorrectly. If I toggle the radio button and the watches appear like this:

 $("#rbArrearsLHO[value='True']").is(":checked") ? 0 : -1: -1
 $("#rbArrearsLHO[value='True']").is(":checked"): false
 $("#ArrearsLHOLocation").val(): "-1"
 $("#ArrearsLHOLocation").val() >=($("#rbArrearsLHO[value='True']").is(":checked") ? 0 : -1): true

This page is stopped from being submitted and my error message is displayed.

What am I doing wrong?

Steve