Hi! If I understood you correctly you want to extract latitude and longitude from coordinates and save them in different fields DB as double types. let me share my experience. I created two custom function to get separate latitude and longitude from coordinates value LatLong. the only difference I save it as string, not double (I believe you can change string to double) When I use Action create or update document in DB to set values for latitude field and longitude fields I use custom function as a source and add to function argument Coordinates latLong. My code to extract Latitude

import 'dart:convert';\nimport 'dart:math' as math;\n\nimport 'package:flutter/material.dart';\nimport 'package:google_fonts/google_fonts.dart';\nimport 'package:intl/intl.dart';\nimport 'package:timeago/timeago.dart' as timeago;\nimport '/flutter_flow/lat_lng.dart';\nimport '/flutter_flow/place.dart';\nimport '/flutter_flow/uploaded_file.dart';\nimport '/flutter_flow/custom_functions.dart';\nimport '/backend/backend.dart';\nimport 'package:cloud_firestore/cloud_firestore.dart';\nimport '/backend/schema/structs/index.dart';\nimport '/auth/firebase_auth/auth_util.dart';\n\nString? latitudeFromLocation(LatLng? location) {\n  /// MODIFY CODE ONLY BELOW THIS LINE\n\n  // return latitude as string\n  if (location != null) {\n    return location.latitude.toString();\n  } else {\n    return null;\n  }\n\n  /// MODIFY CODE ONLY ABOVE THIS LINE\n}

to extract longitude

import 'dart:convert';\nimport 'dart:math' as math;\n\nimport 'package:flutter/material.dart';\nimport 'package:google_fonts/google_fonts.dart';\nimport 'package:intl/intl.dart';\nimport 'package:timeago/timeago.dart' as timeago;\nimport '/flutter_flow/lat_lng.dart';\nimport '/flutter_flow/place.dart';\nimport '/flutter_flow/uploaded_file.dart';\nimport '/flutter_flow/custom_functions.dart';\nimport '/backend/backend.dart';\nimport 'package:cloud_firestore/cloud_firestore.dart';\nimport '/backend/schema/structs/index.dart';\nimport '/auth/firebase_auth/auth_util.dart';\n\nString? longFromLocation(LatLng? location) {\n  /// MODIFY CODE ONLY BELOW THIS LINE\n\n  // return latitude as string\n  if (location != null) {\n    return location.longitude.toString();\n  } else {\n    return null;\n  }\n\n  /// MODIFY CODE ONLY ABOVE THIS LINE\n}

Convert latlang string from placepicker to two doubles