I am not able to parse xml file using xpathdocument function. Expression R

The problem is that in the response the XML tag tells the parser that the content is encoded in UTF-16. It is not. So after replacing the encoding definition to UTF-8 the Appian XML parser is able to perform the xpath expression. The code will look like this

= with(local!response:webservicequery(
a!wsConfig(
wsdlUrl: "www.webservicex.net/globalweather.asmx
service: "{www.webserviceX.NET}GlobalWeather",
port: "GlobalWeatherSoap",
operation: "{www.webserviceX.NET}GetWeather"
),
{
GetWeatherSoapIn: {
CountryName: ri!CountryName,
CityName: ri!CityName
}
}
).returnValue.GetWeatherSoapOut.GetWeatherResult,
xpathsnippet(
substitute(local!response, "utf-16", "utf-8"),
"//CurrentWeather/Location/text()"
)

The problem is that in the response the XML tag tells the parser that the content is encoded in UTF-16. It is not. So after replacing the encoding definition to UTF-8 the Appian XML parser is able to perform the xpath expression. The code will look like this

= with(local!response:webservicequery(
a!wsConfig(
wsdlUrl: "www.webservicex.net/globalweather.asmx
service: "{www.webserviceX.NET}GlobalWeather",
port: "GlobalWeatherSoap",
operation: "{www.webserviceX.NET}GetWeather"
),
{
GetWeatherSoapIn: {
CountryName: ri!CountryName,
CityName: ri!CityName
}
}
).returnValue.GetWeatherSoapOut.GetWeatherResult,
xpathsnippet(
substitute(local!response, "utf-16", "utf-8"),
"//CurrentWeather/Location/text()"
)