Checkout Rule Not Working -- 3 Line Rule not possible?

Hi, I'm trying to use the following check out rule:

-:.
+:NET_DLLs=>NET_DLLs
+:NET_DLLs=>WebSites/OAMobilePortal/Bin

What ends up happening, is that only the WebSites/OAMobilePortal/Bin directory gets created. The NET_DLLs directory does not. I want that vcs directory (NET_DLLs) copied to those two directories, not just one.

Thanks.