Thanks @zenofmud
@ -372,7 +372,7 @@ To add an overlay instead of a base layer - specify the `overlay` property inste
"url": "https://nowcoast.noaa.gov/arcgis/services/nowcoast/radar_meteo_imagery_nexrad_time/MapServer/WmsServer?",
"opt": {
"layers": "1",
"format": 'image/png",
"format": "image/png",
"transparent": true,
"attribution": "NOAA/NWS"
},