Extract xml request value and sum a number to return in the response

[Iacopo Bonechi]

Hello,

I'm stuck with this problem, i'm working in wiremock studio with xPath helper, i need to get a field from request, manipulate that, and return in the response.

it' possible to add a number to this expression :    
{{soapXPath request.body '/activatePaymentNoticeReq/amount/text()'}} ?

for example  {{soapXPath request.body '/activatePaymentNoticeReq/amount/text()'}} + 1;

Thanks for help