WireMock.Net/Lobby

I want to create a mock response for SOAP service which accepts XML request body. I'm using XPathMatcher for request matching. Request is matching successfully. I need to read one attribute of request.body and create the response using that.
My XML request is like this. I need the token id to create the response body.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.Test.nl/XMLHeader/10" xmlns:req="http://www.Test.nl/Betalen/card/Services/RdplDbTknLystByOvkLyst/8/Req">
<soapenv:Header>
<ns:ReqHeader>
<ns:HeaderVersion>10</ns:HeaderVersion>
<ns:MessageId>MsgId10</ns:MessageId>
<ns:ServiceVersion>8</ns:ServiceVersion>
<ns:MessageTimestamp>?</ns:MessageTimestamp>
</ns:ReqHeader>
</soapenv:Header>
<soapenv:Body>
<req:RdplDbTknLystByOvkLyst_REQ>
<req:Code>CSC</req:Code>
<!--Optional:-->
<req:Detail>Test</req:Detail>
<req:TokenIdLijst>
<!--1 to 10 repetitions:-->
<req:Tokenid>0000083256</req:Tokenid>
<req:Tokenid>0000083259</req:Tokenid>
</req:TokenIdLijst>
</req:RdplDbTknLystByOvkLyst_REQ>
</soapenv:Body>
</soapenv:Envelope>
I am using these matcher model while creating mapping
var matcherModel = new MatcherModel
{
Name = "WildcardMatcher",
Pattern = "/xpathsoap",
RejectOnMatch = false,
IgnoreCase = true
};

        var bodymatcherModel = new MatcherModel
        {
            Name = "XPathMatcher",
            Pattern = "//*[local-name() = 'RdplDbTknLystByOvkLyst_REQ']",
            IgnoreCase = true
        };

I am trying to get the response as below.
var response = new ResponseModel()
{
StatusCode = 201,
Headers = header,
Body = "{{ XPath.SelectNodes request.body \"//TokenIdLijst/Tokenid \"}}",
UseTransformer = true
};
I am able to get the whole request.body. But Response.body is always empty after applying xpath.