Specifies the longitude for the named location. When this property is changed, the Address property is set to ''. If both the Latitude and Longitude properties are assigned non-zero values, then the latitude and longitude are assigned to the map, and:
If the Center property is set to True, the location will be centered on the map.
If the SetMarker property is set to True, the a marker will be placed on the location on the map, and the Title will be displayed as a hint when the mouse hovers over the marker.