protected override async Task <Action <AsyncCodeActivityContext> > ExecuteAsync(AsyncCodeActivityContext context, CancellationToken cancellationToken) { // Inputs var phonenumber = PhoneNumber.Get(context); var countrycode = CountryCode.Get(context); var valid = false; string e164 = null; var util = PhoneNumberUtil.GetInstance(); try { var number = util.Parse(phonenumber, countrycode == null ? null : $"{countrycode:G}"); valid = util.IsValidNumber(number); e164 = util.Format(number, PhoneNumberFormat.E164); } catch (NumberParseException) { valid = false; } // Outputs return((ctx) => { IsValidNumber.Set(ctx, valid); FormattedNumber.Set(ctx, e164); }); }