async Task ExecuteBecomeCashPointCommand() { var location = await Geolocation.GetLastKnownLocationAsync(); MyLat = location.Latitude; MyLong = location.Longitude; BigInteger latitude = Nethereum.Util.UnitConversion.Convert.ToWei(MyLat); BigInteger longitude = Nethereum.Util.UnitConversion.Convert.ToWei(MyLong); var result = await accountsManager.BecomeCashPointAsync(DefaultAccountAddress, CashPointName, latitude, longitude, Phone, Rate, 2); await navService.DisplayAlert("Send Result", $"tx:{result}", "ok", "cancel"); }