Trigger change on text not work

[XShandow]

JS

$("#add").click(function () {
        debugger

        $("#cvk").val("asdasda").change();

        $("#state").val("1").change();
    });

cvk: {
                trigger: 'change',
                validators: {
                    notEmpty: {
                        message: 'The CVK is required'
                    }
                }
            },
            state: {
                trigger: 'change',
                validators: {
                    notEmpty: {
                        message: 'The State is required'
                    }
                }
            },

JSP

 <div class="form-group">
                                        <label
                                                class="col-xs-4 col-sm-4 col-md-4 col-lg-4 control-label">Keyblock CVK:</label>
                                        <div class="col-xs-8 col-sm-8 col-md-8 col-lg-8">
                                            <input type="text" class="form-control" id="cvk" name="cvk"
                                                   placeholder="Search or input CVK">
                                        </div>

                                    </div>

                                    <div class="row">

                                        <span class="col-xs-2 col-sm-2 col-md-2 col-lg-2 control-label">State:</span>
                                        <div class="form-group col-xs-2 col-sm-2 col-md-2 col-lg-2">
                                            <select class="form-control" id="state" name="state">
                                                <option value="">Select Subject</option>
                                                <option value="1">Subject 04</option>
                                                <option value="2">Subject 05</option>
                                                <option value="3">Subject 06</option>
                                            </select>
                                        </div>
                                    </div>

The "cvk" is input, change is not work. The "state" is select ,change is work.

BootstrapValidator version v0.4.4