Question Problem : Vertex color & Shader graph

Hello all,

I cant figure why my shader doenst render corretly.

I added vertex color on my mesh with maya like on this picture :



I want to use vertex color to make different emission color effect but it doenst render corretly.
Here is the Vertex color put in albedo :

Here is the problem when I try my mesh :

Why whole paws are red?..
Here is my shader :

 

Do you have any suggestion?
I checked on maya, I dont think the problem is coming from this step but Alpha of Vertex color look different for the body and paws.(black paws & body white on unity).

I tried :

• Modify value of the first lerp(Vector4(0,0,0,0).
  
• Display alpha on Maya( no variance on mesh).

Somes details :

• Build for Mobile
• Made texture on substance( but mesh is coming from maya).

 

What value did you put in your vector 4 ?