How to update value

Hi, I am new to this, but is it possible to update request result with soap request?
Lets say you have country code request and result would be Capitol, I would like to update Capitols value.

I have search tutorials for this but no luck.

I am confused.
Are you trying to update the request body or the response body? Sharing some screenshots from Postman would help.

request
result

I would like to update the value “Helsinki” to something new / different.