Linking attachment to Asana task

Hi there - I have integrated our marketing request form into Asana and it creates a new task in my project and fills in my custom fields as needed, however I cannot find a way to get the attachment on the form to be an attachment on the new task created? I don't see any options on the integration tab to add that but we desperately need the attachment to show up.

I think this is a duplicated thread, I have already posted a reply here: https://www.jotform.com/answers/1338171 

Thanks.