You can read about parameterization using the following two links.
http://www.loadtestingtool.com/help/workin...variables.shtmlhttp://www.loadtestingtool.com/help/parame...lculation.shtml(Note: You can also find corresponding topics in the help file provided with product.)
Recently we also created a demo clip showing step by step how to perform the parameterization. You can download it here:
http://www.loadtestingtool.com/quickstart/WAPTdemo.aviAlso, I recommend you to use the "Verify test" button to check your profiles before running the test. It will execute each profile one time and log all the details. After the verification is finished you can expand the "Logs" folder in the left view. You will see all the requests and server responses logged during the profile execution. You can also use logs for test runs, but you need to choose the level of details on the “Log and Report Settings” page.
Note also that when you record a profile, you should start from the very first URL that you use to access the web site. If you start recording from a page inside a user session, your profile will be incomplete and will not produce a valid session during the test.
If you still cannot find the reason of the problem, please send your profile (.wpp file) and log file with the test verification data to
support@loadtestingtool.com. To save logs right click on the Logs folder and choose "Save Logs" from the menu.