Help add vector to obi cloth

[Richard]

Hello.
I try to add vector to obi cloth. I have a error:Cannot implicitly convert type 'UnityEngine.Vector3' to 'float', but the direction of coding is not problem?

using UnityEngine;
using System.Collections;
using Obi;

[RequireComponent(typeof(ObiActor))]
public class DistanceAnchor : MonoBehaviour
{

    ObiActor actor;
    public ObiSolver solver;
    


    void Awake()
    {
        actor = GetComponent<ObiActor>();

    }

    void Update()
    {
        ObiSolver solver = actor.Solver;

        float invMassPerParticle = 0.01f;
        for (int i = 0; i < actor.invMasses.Length; ++i)
        {
            int indexInSolver = actor.particleIndices[i];
            actor.invMasses[i] = solver.invMasses[indexInSolver];
            actor.invMasses[i] = new Vector3(0.0f, 0.05f, 0.0f);
            
        }
    }
}