attach single document not attach list of document to email

I develop Email module in my project and email send successfully , and I attach document document to my mail but when I am going to attach document then it asks list of document while we attach list then all the documents which are present in the database are sent to email but I want to send only generated document. these is my microflow where I attach file     when I am going to attach generated file then got error List 
1 answers

Did you try creating a new list, to which you add only the document that you want to send and then passing the new list as an argument?