How to _Tint a blended texture shader?

Hey guys!

Been trying to get my tint to work in this shader, but i cant figure it out, i found some similar questions on the forums and nothing that i apply seems to work, any advice?

Thanks!

Properties {
    _Tint ("Tint Color", Color) = (.5, .5, .5, .5)
    _Blend ("Blend", Range(0.0,1.0)) = 0.5
    _FrontTex ("Front (+Z)", 2D) = "white" {}
    _FrontTex2("2 Front (+Z)", 2D) = "white" {}
}

SubShader {
    Tags { "Queue" = "Background" }
    Cull Off
    Fog { Mode Off }
    Lighting Off
    Color [_Tint]
    Pass {
        SetTexture [_FrontTex] { combine texture }
        SetTexture [_FrontTex2] { constantColor (0,0,0,[_Blend]) combine texture lerp(constant) previous }
    }

}

How about try to use a custom cg shader rather than ShaderLab ?
This maybe helpful since all work is done exactly by your own shader code.