Add a "condition:on time-out" to be triggered when time-out. To replace the callback of official function/rex_function. There have SOL issue when using "condition:on function" in this behavior.
The usage of current version of timer behavior --
<img src="http://i1081.photobucket.com/albums/j352/rexrainbow1/screen1-31_zpsf4a20066.png" border="0">
BTW, user need to update timeline plugin.