We're tying to use the gform_paypal_query filter to send some data to PayPal for accounting purposes. We were excited to see the data going to the custom field successfully, however for now obvious reasons this breaks the built in functions for IPN. Is there a way without breaking the IPN services to use the custom variable? This is only option I can find to solve this request - maybe there is another variable we could try? We also tried the memo variable without success.