How to update Rest API's resource dynamically using groovy in ReadyAPI

my resource is in this format "testing/101/getCustomer/99"

Here I need to change "101" and "99" part dynamically as that I can run for multiple values.  I looked into the ReadyAPI's built in feature, but it was not that helpful.

I also found this link, but it changed in the entire project. The solution I am looking for is in test case level. As my each test case will have different url .

https://community.smartbear.com/t5/SoapUI-Open-Source/How-to-set-the-resource-path-at-run-time-while-creating-a-test/td-p/138480

Any help will be appreciated.