Taking a shot here. Does anyone know how to get attachments from a skuid model attached to a conga email template?

This is the only resource I have found that was helpful so far:
https://www.congasphere.com/build/advanced/Using_a_Salesforce_Attachment.htm

So far my button looks like this, however this only pulls the first attachment in the model:

https://composer.congamerge.com/composer8/index.html?SessionId={{$Api.Session_Id}}&serverUrl={{$Api.Partner_Server_Url}}&id={{Id}}&emailtemplateid=a0So0000003ZHI5&Templateid={{$Model.PendingSubmittalAttachments.data.0.id}}&queryid=a0To00000043d14&EmailSubject=Submittal+For+Job+{{Name}}&ds7=2