php - paypal website form return parameters with link and auto return -
i choose "on" auto return selling tools: https://www.paypal.com/webapps/customerprofile/
but auto return not working! why?
and form:
<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">         <input type="hidden" name="business" value="example@mail.com">         <input type="hidden" name="cmd" value="_xclick">                       <input type="hidden" name="item_name" value="<?php echo $name; ?>">         <input type="hidden" name="item_number" value="<?php echo $id; ?>">         <input type="hidden" name="amount" value="0.01">         <input type="hidden" name="quantity" value="1">         <input type="hidden" name="return" value="http://example.com/done.php">         <input type="hidden" name="cancel_return" value="http://example.com/cancel.php">         <input type="submit" name="submit" value="buy">     </form> now return page not has parameters this: http://example.com/done.php?tx=xxxx&st=completed&amt=200.00&cc=usd&cm=&item_number=7
i need auto return , paramteres!
help me.
- most likely, did not enable payment data transfer(pdt). 
- you enabled pdt, if transaction made via credit card, need manually click on "return merchant site" link redirected return url means auto-return works if payment made via paypal account. 
steps enable pdt
-login paypal account
-click on profile
-click 'my selling preferences
-click on update next website preferences
-go payment data transfer section
-choose payment data transfer on , token displayed below