Reading textbox value from webpage

Hi All

I have successfully created a webpage showing the readings from a sensor.

Now, the requirement is to, place a textbox on the page and when user submits, read that string value and write it to the flash file sytem.

I have looked through samples, and tried using http.lib methods such as http_getURL (passing through query string), but couldnt succeed.

Or simply, howto read the value of “key”? (Is there any other better method to pass the value)

If anyone can provide some guidance it will be greatly appreciated.

Thanks in advance