May be related to a known issue.
For More Information see: ⌘-V Does Not Paste in "Save As PDF" Dialog
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip
Thank you for your post.
This issue was discovered in FileMaker Pro 13.0v2 (it worked in 13.0v1). Our Development and Testing departments are aware of this issue.
I have attached your post to the original report. When there is a change to the issue, I will post again.
This issue has been fixed in FileMaker Pro 14.0.1.