html - PayPal return URL -

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here's code paypal button: 

<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">     <input type="hidden" name="cmd" value="_xclick">     <input type="hidden" name="business" value="my@email.com">     <input type="hidden" name="lc" value="gb">     <input type="hidden" name="button_subtype" value="products">     <input type="hidden" name="no_note" value="1">     <input type="hidden" name="no_shipping" value="1">     <input type="hidden" name="rm" value="0">     <input type="hidden" name="return" value="http://www.example.com">     <input type="hidden" name="item_name" value="my item">     <input type="hidden" name="amount" value="25.00">     <input type="hidden" name="currency_code" value="gbp">     <input type="hidden" name="bn" value="pp-buynowbf:proceed_btn.gif:nonhosted">     <input type="hidden" name="item_number" value="4bd9569402cde">     <input type="image" src="http://www.example.com/image.gif" border="0" name="submit" alt="paypal - safer, easier way pay online.">     <img alt="" border="0" src="https://www.paypal.com/en_gb/i/scr/pixel.gif" width="1" height="1"> </form>

is possible add item_number return url?

for example, after completing payment within paypal user gets sent http://www.example.com?item_number=4bd9569402cde

i remember reading in docs can add new hidden field custom value, posted you.

you use field whatever want - don't recall memory how called, though, sorry, if have docs @ hand you'll find pretty easily.


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