Flutter/Dart - Regex that Checks if password has at least numericCount numeric character matches

DartGist4.dart

//Checks if password has at least numericCount numeric character matches
bool hasMinNumericChar(String password, int numericCount) {
  String pattern = '^(.*?[0-9]){' + numericCount.toString() + ',}';
  return password.contains(new RegExp(pattern));
}