modify
open chrome://restclient/content/restclient.html
click link=Headers
click link=Custom Header
type name=name Cookie
type name=value token=bXJqYXRvOm1yamF0bw==
click css=#modal-custom-header > div.modal-footer > input.btn.btn-inverse
click link=Headers
click link=Custom Header
type name=name Content-Type
type name=value application/x-www-form-urlencoded
click css=#modal-custom-header > div.modal-footer > input.btn.btn-inverse
type id=request-body name=Marta&surname=Martínez
click link=PUT
type id=request-url http://localhost:9080/DAAExample/rest/people/4
click id=request-button
click link=×
waitForElementPresent css=span.header-value
assertText css=span.header-value 200 OK
waitForElementPresent css=#response-body-raw > pre
storeText css=#response-body-raw > pre responseBody
echo ${responseBody}
assertEval JSON.parse(storedVars['responseBody']).name Marta
assertEval JSON.parse(storedVars['responseBody']).surname Martínez