There is no need to convert objects and scripts. The recommended approach is to define a parameter for the initial URL. Check out this article for more details.
The main idea is to have a Navigator.Open action at the beginning of each test case.
For example:
Navigator.Open(Tester.GetParam("EnvURL")); // where EnvURL is a framework parameter (see KB749)
// or
Navigator.Open("https://libraryinformationsystem.org");
// or
Navigator.Open(EnvURL); // where EnvURL is a global variable set by command line or in Spira
RVL version: