Skinned Mesh how to connect bones to mesh help

Hi everyone!

I want to bind my mesh with script code to a bone animation! Most of the parts I understand, but I have trouble to find the connection between bones and mesh!

Hope someone can tell me, what I'm missing, or explain it to me. bones and BoneWeight seems logical not connected, but that can't be? Thx!

     gameObject.AddComponent<Animation>();
     SkinnedMeshRenderer renderer = gameObject.AddComponent<SkinnedMeshRenderer>();
     
     
     /*MESH*/
     Mesh sourceMesh = Instantiate(baseMesh) as Mesh;
     sourceMesh.RecalculateNormals();
     
     BoneWeight[] weights = new BoneWeight[sourceMesh.vertexCount];
     for(int i = 0; i < weights.Length; i++){
         weights[i].boneIndex0 = 0;
         weights[i].weight0 = 1;
     }
     sourceMesh.boneWeights = weights;
     
     
     
     /*SKELETON*/
     Transform[] bones;
     Transform sourceSkeleton = Instantiate(skeleton) as Transform;
     
     sourceSkeleton.name = "skeleton";
     sourceSkeleton.parent = gameObject.transform;
     
     bones = gameObject.GetComponentsInChildren<Transform>();
     
     
     
     /*BIND POSES*/
     Matrix4x4[] bindPoses = new Matrix4x4[bones.Length];
     for(int i = 0; i < bindPoses.Length; i++){
         bindPoses[i] = bones[i].worldToLocalMatrix * transform.localToWorldMatrix;
     }
     
     /*MATERIAL*/
     Material[] materials = new Material[3];
     materials[0] = materials[1] = materials[2] = new Material(Shader.Find(" Diffuse"));
     renderer.materials = materials;
     
     /*END*/
     sourceMesh.bindposes = bindPoses;
     renderer.bones = bones;
     renderer.sharedMesh = sourceMesh;