Regular expression in HP Loadrunner

Question

we are using HP loadrunner in order to run performance test on a web application. In the script we have some items like:

    ITEMDATA, 
    "Name=ROW_LIST_CODE$367$", "Value=", ENDITEM,

Every istallation of the software the $367$ value change with a different number and the LR script fails. Is there a method to susbtitute it with regular expression? Thank you!

The information is incomplete to assist. Is the number 367 randomly generated ? Is it response from some previous request ? Do you already have the data for next request ? Please provide the above info to solve this problem. — Nirmit Srivastava
The number is generated by the software under test when it renders the page. I don't know how and it isn't a response of a previous request. It seems to be a sort of ordinal regarding the position of objects on page. — BlueTree
I don't think if you replace the number with a regular expression will solve the problem, because the server will be expecting the exact value 367. We need to have the next number somehow to automate it. — Nirmit Srivastava

MikeJRamsey56 MikeJRamsey56 · Accepted Answer · 2016-03-03T19:28:56

Is the 367 a nonce?

The server sends a unique value on each transaction that must be supplied on the very next transaction. This is used to prevent replay attacks. Of course LoadRunner is a replay engine so the most important LR command is Web_reg_save_param. See web_reg_save_param function explained

Regular expression in HP Loadrunner

1 Answers