arcgis javascript api - Configurable Map Viewer (CMV) - Configure dynamic layer to not display all sub-layers?

Using the example below, from the CMV, what would be the best way to not show the Fire Stations layer in the Louisville Public Safety map service assuming I wanted to see everything else and I wanted sublayertoggle true?

            type: 'dynamic',
            url: 'http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/PublicSafety/PublicSafetyOperationalLayers/MapServer',

            title: 'Louisville Public Safety',
            slider: true,
            noLegend: false,
            collapsed: false,
            sublayerToggle: true, //true to automatically turn on sublayers
            options: {
                id: 'louisvillePubSafety',
                opacity: 1.0,
                visible: true,
                imageParameters: imageParameters

            },
            identifyLayerInfos: {
                layerIds: [2, 4, 5, 8, 12, 21]
            }

I've added these 3 lines after the declaring and setting of imageParameters:

var imageParameters2 = new ImageParameters(); imageParameters2.layerIds = [1]; imageParameters2.layerOption = ImageParameters.LAYER_OPTION_EXCLUDE;

and changed imageParameters: imageParameters to imageParameters: imageParameters2 in the layer config but the Fire Station layer still shows up.