Blender mixing multiple UV channels

[Mirror_kd]

When using the shader dif.spec.mult.dif.spec.iamod.dif.spec, and 3 UV channels, I see in the Viewport Shading how the two textures are mixed, but when I add a 3 texture, I do not see the result in the Viewport
How to solve the problem, and do that I see the result in the Viewport ?

[all_zer]

There must be different UV_Maps for each of textures...
And also, use vertex paint mode, to paint the transperency.