i need a EUD trigger that can detect if a unit is being attacked or when he is at low health
if some 1 can find the offset please convert it into a trigger and post it here please
or is this even possible?

Health detection is explained in one of the stickied links

oh thanks but now is there a EUD that can detect if a unit is being attacked?

The basic theory here would be to constantly detect life and set a dc to be the life of the unit during the previous trigger run. If you use binary countoffs on two values (both current and last trigger's hp) one will be bigger than the other when you subtract them. If the current has a remainder, you gained life. If the previous dc has a remainder, you have been attacked or lost life. The amount will be the amount you actually lost, so you can detect that damage.

It's a very convoluted process. If you didn't know enough to look in the sticky for help, you will have no hope of achieving something like this any time soon.

If you want "low health" that's SO much easier. Check my tutorial in the sticky to detect unit HP, and with that you can detect when a unit is less than a certain value. You should be able to do it if you can follow directions.