Unity Polybrush say that my shader not compatible

I have problem with polybrush in unity, it say that my shader not compatible with blending, but i actually yes, someone knows how it detect compatibility?

Properties
    {
        [MainTexture] _BaseMap("Texture", 2D) = "white" {}
        [MainColor] _BaseColor("Tint", Color) = (1.0, 1.0, 1.0)

        _ShadowTint("Shadow Tint", Color) = (0.0, 0.0, 0.0, 1.0)
        _Ramp0("Ramp Threshold", Range(-1, 1)) = -0.253
        _RampSmoothness("Ramp Smoothness", Range(0, 2)) = 0.005

        [Toggle(_TOON_VERTEX_LIT)] _VertexLit("Vertex Lighting", Float) = 0
        [Toggle(_FOG)] _Fog("Fog", Float) = 1
        [Toggle(_VERTEX_COLOR)] _VertexColor("Vertex Color", Float) = 0

        [Slider(0, 1)]_Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
        
        // Blending state
        [Toggle] _ZWrite("Z Write", Float) = 1.0
        [Enum(UnityEngine.Rendering.CullMode)] _Cull("Culling", Float) = 0
        
        [HideInInspector] _Surface("__surface", Float) = 0.0
        [HideInInspector] _Blend("__blend", Float) = 0.0
        [HideInInspector] _SrcBlend("__src", Float) = 1.0
        [HideInInspector] _DstBlend("__dst", Float) = 0.0
        [Toggle] _AlphaClip("Alpha Clipping", Float) = 0.0

        // texture blending
        [Toggle(_TEXTURE_BLEND)] _TextureBlend("Texture blend", Float) = 0
        _Texture1 ("Blending texture 1", 2D) = "white" {}
        _Texture2 ("Blending texture 2", 2D) = "white" {}
    }