Open the Live Data Settings dialog box (View > Live Data Settings).
In the URL Request area, click the Plus (+) button and enter a parameter your page expects.
Specify a name and a test value for each parameter.
In the Method pop‑up menu, select the HTML form method your page expects: POST or GET.
In the Initialization Script text area, include any source code you want to insert at the top of the page before it runs.
Initialization scripts usually consist of code that sets session variables.
To save your settings for the current page, click Save Settings For This Document, and click OK.