can someone help me on how I can switch the basemap layers? I'm using Mapbox layers (vizonomy.com/cityscan/philadelphiav2), but when I switch from satellite to road, the feature layer is pushed to the behind the new basemap.

Thanks! Ricardo

Can someone help me on how I can switch the basemap layers? 

I'm using Mapbox layers, but when I switch from satellite to road, the feature layer is pushed to the behind the new basemap.