How to pass the data driven values in URL end point

Hi 

Have written the groovy scripting to get the data from excel sheet

and am able to pass the value in request parameter but unable to pass the excel value in request Testcase URL end point..

could u help me fix the issue

Ex:https://xxxd.xx.com/xxxxx/xx/(here need to pass the excel value)

like : https://xxxd.xx.com/xxxxx/xx/ab123456