in my IPN script I am using a variable called num_of_items. I use it for a loop to loop thru each item to make sure the cost and price paid are correct.
the problem is that my IPN works great when I directly use the GET method. However, when I use the POST method and then test via paypal's sandbox ipn simulator it won't pass this value to my script. So, my script doesn't put anything into the database.
I would like to know how I can test my IPN script via the IPN simulator to pass in this variable?