jQuery validate custom method not getting called

jQuery validate custom method not getting called

I have used `jQuery.validator.addMethod` to create a custom validate method that will make sure there is at least one row in my data-entry table. Using Firebug, my breakpoint in the method isn't being hit at all. Am I missing something? 

Note: I am sure there are problems with the validation method itself, but that is because I can't debug it yet. I am still very much a novice with JavaScript. 

Here is what my table looks like:

    <table id="editorRows">
        ...
        <tbody class="editorRow">
            <tr class="row1">
            </tr>
            <tr class="row2" style="display: none;">
            </tr>
            <tr class="row3" style="display:none;">
            </tr>
        </tbody>
        <tbody class="editorRow">
            <tr class="row1">
            </tr>
            <tr class="row2" style="display: none;">
            </tr>
            <tr class="row3" style="display:none;">
            </tr>
        </tbody>
    </table>

Here is my custom validator:

    jQuery.validator.addMethod('required_row', function(val, el) {
        var rowCount = $("#editorRows tbody").length;
        if (typeof rowCount != "undefined") {
            return (rowCount > 0);
        } else {
            return false;
        };
    }, "Your request must contain at least one day.");

    // Validate the form before submitting
    $("form").validate({
        rules: {
            "#editorRow": { required_row: true }
        }
    });