You can set a DLAY loop to keep the wall alive, if you really need it to last longer
Maximum life value can last for about 18 minutes, yes.
i left it in the background for a while and came back, it died
@yak15_stalnoj: you can just click on the signs with the sign edit tool. Put {b|Button} into a sign, and it'll spark the particle that it's pointed at when clicked
this is very amazing technology
its ok, btw how did you do this magixx buttons?