android: passing double data latitude and longitude can't show in map fragment

any one can help me? i got some project, my project is make a tourism application, is can show map for every place using latitude and logitude from database, i use this script.

double lat = 0;
double lng = 0;
if(cursor.moveToFirst()){
cursor.moveToPosition(position);
lat = cursor.getDouble(cursor.getColumnIndex("lat"));
lng = cursor.getDouble(cursor.getColumnIndex("lng"));

}

and then, i pass double data lat and lng to map1.class

Intent intent1  =   new Intent(this, map1.class);
intent1.putExtra("latx", lat);
intent1.putExtra("lngy", lng);
setResult(RESULT_OK, intent1);

in map1.class, i receive using this script.

Intent i = getIntent();
Double d1 = i.getDoubleExtra("latx", latitude1);
Double d2 = i.getDoubleExtra("lngy", longitude2);

 FragmentManager myFragmentManager = getSupportFragmentManager();
 SupportMapFragment mySupportMapFragment =  (SupportMapFragment)myFragmentManager.findFragmentById(R.id.map1);
  myMap = mySupportMapFragment.getMap();

 LatLng alam3 = new LatLng(d1, d2);
 MarkerOptions markerPosong = new MarkerOptions();
 markerPosong.position(alam3);
 markerPosong.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));

and why in fragment map can't show coordinate from latlng .? its like the data double isn't receive the data from database.