Can i use Morph Target technics with A7 Pro and How it works ?

I tried with ent_getvertex(), ent_setvertex() and ok it's work fine with one vertex.
But if i want to morph up to 50 vertex together?
and i 'm wondering "I must found the wheel ? " or there is other way and how it works ?

Please Help me...
Thx... and (sorry for my english)...