if I understand you correctly:
you want to go through each map (1,4,7,10,and 12 (and there might be , for example, 5 lots of map01)) once (and only once) when the score gets above 5 ?
if so then (I think) all you need is on your event
System : Score>5
a second condition
system : Trigger once
No.I have just one map01.
Look at the capx.There are two maps in total(That is randomely spawned)
Once the last map reaches 0.5*self.width, another map is randomly chosen and spawned next to it.
If the score is above 5,I want the obstacles to be always present whenever the map is spawned.
(Hope I made it clear enough)