uploads

I have a Drupal 7 site with a custom node type with a custom attachment field. After a (kind of this custom) node has been published, I got an e-mail with the help of Rules module. I would like to set up an another rule, which sends me an another e-mail, when somebody edits this node and uploads an attachment. Inside the mail, I want to see the full url to the uploaded file.

After a several test, I'm not able to insert the full path to the uploaded file. The [node:field-attachment:file] doesn't work at all. I'm able to insert (manually) the url where this file resides, but after I can not insert the file name (so even the filename would be enough for me).

So with the [node:field-attachment:file] I got an error: Fatal error: Call to a member function value() on a non-object in /home/xxx/sites/all/modules/entity/entity_token.tokens.inc on line 297.