Using geopoint with Facebook Open Graph story on iOS

I'm trying to post a map location on the user wall. Everything is working fine; the custom story is posted containing the map and the place mark with a label, but it's always located in the center bottom of the map (antartica - not good) It seems the lat/long values are not properly sent?

I feel like I tried all options settings up the location lat/long also referring to this question: How to define a "GeoPoint" property in Facebook SDK for iOS

    NSMutableDictionary<FBOpenGraphObject> *object = [FBGraphObject openGraphObjectForPost]; 
    object.provisionedForPost = YES;
    object[@"title"] = @"Title"
    object[@"type"] = @"appname:objecttypename";
    object[@"description"] = @"desc";
    object[@"place:location"] = @{@"latitude": @"45.06494", @"longitude": @"7.693421"};

    id<FBOpenGraphAction> action = (id<FBOpenGraphAction>)[FBGraphObject graphObject];
    [action setObject:object forKey:@"objecttypename"];

FBOpenGraphActionParams *params = [[FBOpenGraphActionParams alloc] init];
    params.action = action;
    params.actionType = @"appname:actionname";
    params.previewPropertyName = @"objecttypename";