key = this.value;
                            _ctx.xyData = key;
                            _ctx.testResult = null;
                            chart.__testHelper.switchGroup(key);
                            updateView();
                        }
                    }, {
                        type: 'br',
                    }, {
                        text: 'matrix.x show:',
                        type: 'select',
                        values: [true, false],
                        onchange() {
    