Hello Ashhad,
If you are using LR 11.04 then you do not need the ''uid='' part just this
LR.getParam(''username'')
Replace the Original values ''username'' in the step's Argurment section And you'll need to create a parameter list in the Vugen for the ''username''
Question : What LoadRunner patches do you have installed???
To check open Vugen> Help> about .... If you want to use Ajax Truclient and the have the Ajax Truclient Help Documents you MUST have LR 11.03 or LR.04
*******Best way to Parameterize a value do this:*********
1. Recorded your Script
2. Find the step you want to parameterize Press the expend step arrow (right side)
3. Open the ''Arguments'' subsection to see your Value
4. Highlight EVERYTHING in the Value box, (yes the '' '' too)
5. Right Click on the highlighted Value and select ''Replace with a Parameter''
6. The ''Enter Parameter Name'' popup will appear
7. Change the ''Parameter Name''
8. Press ''OK'' (this Bring the Vugen to the front)
9. Press the ''parameter properties'' icon
10. Add and Adjust Parameter as needed
11. Press ''Close''
12. Note the Value is now [ LR.getParam(''USER_ID'' ]
13. TO check the code move the mouse to the right of the Values: Box and click on the JS when it appears
14. Press OK