diff --git a/example/ios/Flutter/flutter_export_environment.sh b/example/ios/Flutter/flutter_export_environment.sh
new file mode 100644
index 0000000..a44c1dc
--- /dev/null
+++ b/example/ios/Flutter/flutter_export_environment.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+# This is a generated file; do not edit or check into version control.
+export "FLUTTER_ROOT=D:\Programmi\flutter"
+export "FLUTTER_APPLICATION_PATH=C:\Users\Salvatore Giordano\development\CountryCodePicker\example"
+export "FLUTTER_TARGET=lib\main.dart"
+export "FLUTTER_BUILD_DIR=build"
+export "SYMROOT=${SOURCE_ROOT}/../build\ios"
+export "FLUTTER_FRAMEWORK_DIR=D:\Programmi\flutter\bin\cache\artifacts\engine\ios"
+export "FLUTTER_BUILD_NAME=1.0.0"
+export "FLUTTER_BUILD_NUMBER=1"
diff --git a/lib/country_code_picker.dart b/lib/country_code_picker.dart
index d29bb17..5e00880 100644
--- a/lib/country_code_picker.dart
+++ b/lib/country_code_picker.dart
@@ -32,13 +32,13 @@ class CountryCodePicker extends StatefulWidget {
   final bool showFlag;
 
   /// contains the country codes to load only the specified countries.
-  final List<String> onlyCountries;
+  final List<String> countryFilter;
 
   CountryCodePicker({
     this.onChanged,
     this.initialSelection,
     this.favorite = const [],
-    this.onlyCountries = const [],
+    this.countryFilter = const [],
     this.textStyle,
     this.padding = const EdgeInsets.all(0.0),
     this.showCountryOnly = false,
@@ -63,9 +63,9 @@ class CountryCodePicker extends StatefulWidget {
             ))
         .toList();
 
-    if(onlyCountries.length > 0) {
+    if(countryFilter.length > 0) {
       elements =  elements
-        .where((c) => onlyCountries.contains(c.code))
+        .where((c) => countryFilter.contains(c.code))
         .toList();
     }