tile38 use Geofencing watches

[zhengbaowei]

Originally is SETCHAN warehouse NEARBY fleet FENCE POINT 33.462 -112.268 6000 This can only be within the range of points and radii And what I want is to monitor a point in a polygonal area Similar to this SETCHAN warehouse NEARBY fleet FENCE OBJECT '{"type":"Polygon","coordinates":[[[120.409977,36.417051],[120.414882,36.417022],[120.414702,36.415221],[120.409591,36.415424],[120.409977,36.417051]]]}' But it's not allowed,So how can we set the type to OBJECT