Fiware-Cygnus ERROR: invalid input syntax for type point

Question

I have an attribute in Fiware-Orion with type Point, as follows,

{
    "name": "Coords",
    "type": "geo:point",
    "value": "LATITUDE,LONGITUDE"
 }

and Cygnus is subscribed to Orion. When Cygnus PostgreSQLSink is receiving the event and it tries to store it in the PostgreSQL database I'm getting the following error

WARN sinks.OrionSink: Bad context data (ERROR: invalid input syntax for type point: "[]"

What should I use in Fiware-Orion?