Add Folder to Environment Path in C#

SetGitPath.cs

using System;
using UnityEditor;
using UnityEngine;

public class SetGitPath : MonoBehaviour
{
    [InitializeOnLoadMethod]
    // Start is called before the first frame update
    public static void Initialize()
    {
        var name = "PATH";
        var scope = EnvironmentVariableTarget.User;
        var oldValue = Environment.GetEnvironmentVariable(name, scope);
        string targetPath = @";C:\Users\momod\AppData\Local\GitHubUnity\git\cmd";
        if (!oldValue.Contains(targetPath))
        {
            Environment.SetEnvironmentVariable(name, oldValue + targetPath, scope);
        }
    }
}