Geofire query at location - flutter

Question

I'm building an app which uses location. The people who are closer to 10 meters should be showed.
I use Geofire but the problem I'm facing is the value I pass to it's radius for it to get me people doesn't work at all. I pass 10 meters but when I calculate the distance using distance between, of the list of people it gave me I get 346 meters instead. Is it a problem from their end or mine? That is my code.
Geofire.queryAtLocation(position.latitude, position.longitude, chat)!.listen((map) {
print("This is the map: $map");
if (map != null) {
var callBack = map['callBack'];
double value = Geolocator.distanceBetween(position.latitude, position.longitude,
map['latitude'], map['longitude']);
print("Distance: $value meters");
switch (callBack) {
case Geofire.onKeyEntered:
NearByUsers nearbyUsers = NearByUsers();
nearbyUsers.key = map['key'];
nearbyUsers.latitude = map['latitude'];
nearbyUsers.longitude = map['longitude'];
if(value < chat) {
GeofireAssistant.nearbyAvailableUsers.add(nearbyUsers);
if (nearbyAvailableUserKeysLoaded == true) {
RequestAssistant.updateUsers();
}
}
break;
case Geofire.onKeyExited:
GeofireAssistant.removeDriveFromList(map['key']);
RequestAssistant.updateUsers();
break;
case Geofire.onKeyMoved:
NearByUsers nearbyUsers = NearByUsers();
nearbyUsers.key = map['keys'];
nearbyUsers.latitude = map['latitude'];
nearbyUsers.longitude = map['longitude'];
GeofireAssistant.nearbyAvailableUsers.add(nearbyUsers);
GeofireAssistant.updateNearbyLocation(nearbyUsers);
RequestAssistant.updateUsers();
break;
case Geofire.onGeoQueryReady:
RequestAssistant.updateUsers();
break;
}
}
if (mounted) {
setState(() {
// Your state change code goes here
});
}
});```