Thanks.
you solve the gimbal lock problem using a third vertex if I got it right?
Correct!
The download is for A8 (
http://www.superku.de/HED.zip). If you have A7, you will need to download the A7-fix, too (see first post).
Is there any way to make same like this but for ragdolls editor?
I've already thought about that, too. Maybe I will create a ragdoll editor in ~March.