Thanks @Ali_RS
The @nehon great work seems is what i need. But i afraid that later will be some conflicts with Skeleton/Armature and much more other classes from base JME and Monkanim v2. i understand rigid body works well too.
also what about Introducing DynamicAnimControl
i would like to use it later on. no conflicts? why i feel like everyone add features separatly code so there is no single version 
I already said i dont like so many outer repos(that might be in JME basecode) that might conflict with each other. (did JME is closed repo or what…)
anyway i will try this when will do customization, but would prefer some solution without ingerate in JME basecode. dont have much workforce to manage too much dependencies. 
so if there are more nice and easy solutions to make rigidbody/animations intact while easy changing weight/tall of character, then please tell too 