Document Attachment into a variable

Im using 6.3.0 version of bonita soft the thing that i want to do is that i have task1, in this task i have a file attachment, also have task2 in this task i want to see de file i attached in task1.

So what i want to know is how is sent the attachment of task1 to a variable to send it to task2.

Thanks in advance!

http://community.bonitasoft.com/answers/attachment-variable-6x#node-14745