import groovy.json.JsonSlurper;
import com.eviware.soapui.support.types.StringToStringMap;

def slurper = new JsonSlurper()

def adminResponse = testRunner.testCase.getTestStepByName("Token").getPropertyValue("response")
def adminResponseJson = adminResponse == null ? null : slurper.parseText(adminResponse)
def obtainedAuthToken = adminResponseJson == null ? null : "Bearer " + adminResponseJson.access_token

//Assign the (generated) token as a global variable
testRunner.testCase.testSuite.project.setPropertyValue("access_token",obtainedAuthToken)
log.info obtainedAuthToken