Surface Shader in Unity3d is not supported for use in Pass

Title

For a long time, has been error:

Shader error in ' Custom_outline_effect ': Parse error:syntax error, unexpected Tok_pass, expecting tok_settexture or '} ' a T Line 69

Just put #pragma surface ... Written in the pass, even if it's wrong

1Pass {//Surface rendering mode is not available in Pass, which means that surface does not support the use of multiple pass2 Cgprogram3                     #pragmaSurface Surf Lambert4 5 sampler2d _maintex;6 7                     structInput {8 float2 Uv_maintex;9                     };Ten  One                     voidSurf (Input in, InOut surfaceoutput o) { AHalf4 C =tex2d (_maintex, In.uv_maintex); -O.albedo =C.rgb; -O.alpha =C.A; the                     } - ENDCG -}

Surface Shader in Unity3d is not supported for use in Pass