Procedural object with mesh collider

Graphics
1

I’m trying to create procedural cube with mesh collider attached to it, but i can’t get it to work.

The problem is that only top face of the cube collides with other objects.

function Start(){
	cube();
}

function cube()
{
   var verts : Array = 
   [
      Vector3(0,0,0),      // front bottom left
      Vector3(0,50,0),     // front top left
      Vector3(50,50,0),    // front top right
      Vector3(50,0,0),     // front bottom right
      
      Vector3(0,0,50),     // back bottom left
      Vector3(0,50,50),    // back top left
      Vector3(50,50,50),   // back top right
      Vector3(50,0,50)     // back bottom right
   ];
   
   var normals : Array = new Array(); 
   var uvs : Array = new Array(); 
   var tri : Array = new Array(); 
   var mf : MeshFilter = GetComponent(MeshFilter);  
      
   // Normals
   for(var e=0; e<verts.length; e++){ 
	normals[e] = transform.right;
   }
   
   // UVs
   for(var i=0; i<verts.length; i++){
      uvs[i] = Vector2(verts[i].x, verts[i].z);
   }
   
   // Triangles
   // Front
   tri[0] = 0;
   tri[1] = 1;
   tri[2] = 2;
   
   tri[3] = 0;
   tri[4] = 2;
   tri[5] = 3;
   
   // Back
   tri[6] = 4;
   tri[7] = 5;
   tri[8] = 6;
   
   tri[9] = 4;
   tri[10] = 6;
   tri[11] = 7;
   
   // Top
   tri[12] = 1;
   tri[13] = 5;
   tri[14] = 6;
   
   tri[15] = 1;
   tri[16] = 6;
   tri[17] = 2;
   
   // Bottom
   tri[18] = 0;
   tri[19] = 4;
   tri[20] = 7;
   
   tri[21] = 0;
   tri[22] = 7;
   tri[23] = 3;
   
   // Left
   tri[24] = 0;
   tri[25] = 1;
   tri[26] = 5;
   
   tri[27] = 0;
   tri[28] = 5;
   tri[29] = 4;
   
   // Right
   tri[30] = 3;
   tri[31] = 2;
   tri[32] = 6;
   
   tri[33] = 3;
   tri[34] = 6;
   tri[35] = 7;
      
   mesh = new Mesh();
   mesh.vertices = verts; 
   mesh.triangles = tri; 
   mesh.uv = uvs; 
   mesh.normals = normals; 
   mf.mesh = mesh; 
   
   GetComponent(MeshCollider).mesh = mesh;
}
2

The property of the mesh collider that you need to set is actually called sharedMesh.