// Validate Fields

  String validateNumber(String value) {
    // String patttern = r'(^[a-zA-Z ]*$)';
    RegExp regExp = new RegExp(r'^[+-]?([0-9]+([.][0-9]*)?|[.][0-9]+)$');
    if (value.length == 0) {
      return "Store Number  is Required";
    } else if (!regExp.hasMatch(value)) {
      return "Store Number must be only have numbers";
    }
    return "validated";
  }

  String validateString(String value) {
    String patttern = r'(^[a-zA-Z ]*$)';
    RegExp regExp = new RegExp(patttern);
    if (value.length == 0) {
      return "Rep Name is Required";
    } else if (!regExp.hasMatch(value)) {
      return "Name must be a-z and A-Z";
    }
    return "validated";
  }

void main() {
  print(validateNumber("something"));
  print(validateString("something"));
  print(validateNumber("123456789"));
  print(validateString("123456789"));
}