how to keep a env_lazer on continuously?

i made a test map and the env_lazer seems to turn itself off automatically when reaching its starting position..

is there some trick into keeping it on continuously? or can lazars activate buttons as they pass over them? because it runs over its starting button as it moves, but i didnt think that would have been a problem

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edits - nevermind, it was the button thing.. forgot i had it set to shootable..

heh.. silly me..

someone can delete this post, i cant figuer out how too ^_^'