Will a ujGooglemaps map appear in a SiteBuilder panel?
GoogleMaps
If you have mappable data in the $_items array you probably don't want lat and lng parameters as they will be provided by each item in the array.
You probably want jrProfile as the module (not sure that that would break it though). Have you seen the jrProfile docs here?:
https://www.jamroom.net/ultrajam/documentation/modules/1770/googlemaps#profile-maps