I just deployed an update to address some message problems that were exposed in another thread. Here are the updates:
1) Message code has been updated and optimized to be *much* faster, so they should be far less likely to cause performance problems in your game
2) Messages now send to attachments correctly
3) Update to the Filter behavior: It now has a "value" input so that you can change the comparison value while the game is running
Let me know in the thread if you have any questions or problems.