yea i forgot how what action it is i to blind some stuff in a map im making...
anyone?

Be sure to check all the wikis/tutorials, and if the Staredit wiki bugs, use the maplantis one:
http://www.staredit.net/maplantis/index.php?sid=af6f4ebe1b;wiki=95#wiki_12

I believe Medics will automatically blind any unit with enough HP (I think "enough" is more than 86, but I'm probably wrong) as long as the Medic has enough energy.

The tutorials say more than 81(not 86) I personally never tried out anything below 100, because I simple didn't need it.

It will also blind nearby detector units regardless of hp. Non detectors need at least 81 to get blinded.

If you can have the unit to be blinded actually attack the medic, the medic will blind it every time.
That is the most reliable way to do it.
From my experience, you should recreate the medic at the moment you need to blind.
If you let the medic sit on the screen, it will try and move to and heal any unit on the map.
This can cause it to ignore units in its vicinity.