diff --git a/Packages/com.coffee.upm-git-extension/Editor/Scripts/AvailableVersions.cs b/Packages/com.coffee.upm-git-extension/Editor/Scripts/AvailableVersions.cs
index 65a8ac9..08f5175 100644
--- a/Packages/com.coffee.upm-git-extension/Editor/Scripts/AvailableVersions.cs
+++ b/Packages/com.coffee.upm-git-extension/Editor/Scripts/AvailableVersions.cs
@@ -22,6 +22,7 @@ public class AvailableVersion : IEquatable<AvailableVersion>
         public string repoUrl = "";
 
         public string refNameText { get { return version == refName ? version : version + " - " + refName; } }
+        public string refNameVersion { get { return version == refName ? version : version + "-" + refName; } }
 
         bool IEquatable<AvailableVersion>.Equals(AvailableVersion other)
         {
diff --git a/Packages/com.coffee.upm-git-extension/Editor/Scripts/InternalBridge.cs b/Packages/com.coffee.upm-git-extension/Editor/Scripts/InternalBridge.cs
index 115c385..281697a 100644
--- a/Packages/com.coffee.upm-git-extension/Editor/Scripts/InternalBridge.cs
+++ b/Packages/com.coffee.upm-git-extension/Editor/Scripts/InternalBridge.cs
@@ -233,8 +233,7 @@ internal static SemVersion GetVersion(this PackageInfo self)
         internal static void UpdateVersions(this Package self, IEnumerable<PackageInfo> versions)
         {
             versions.OrderBy(v => v.GetVersion()).Last().IsLatest = true;
-            self.source = versions;
-            self.UpdateSource(versions);
+            self.Set("source", versions);
         }
 
         internal static void UpdatePackageCollection()
@@ -245,7 +244,7 @@ internal static void UpdatePackageCollection()
         internal static PackageInfo ToPackageVersion(this AvailableVersion self, PackageInfo baseInfo)
         {
             var newPInfo = JsonUtility.FromJson<PackageInfo>(JsonUtility.ToJson(baseInfo));
-            newPInfo.Version = SemVersion.Parse(self.refNameText);
+            newPInfo.Version = SemVersion.Parse(self.refNameVersion);
     #if UNITY_2019_2_OR_NEWER
             newPInfo.IsInstalled = false;
     #else
diff --git a/Packages/com.coffee.upm-git-extension/Editor/Scripts/Utils.cs b/Packages/com.coffee.upm-git-extension/Editor/Scripts/Utils.cs
index 2f0de79..400b19b 100644
--- a/Packages/com.coffee.upm-git-extension/Editor/Scripts/Utils.cs
+++ b/Packages/com.coffee.upm-git-extension/Editor/Scripts/Utils.cs
@@ -5,6 +5,7 @@
 using System.IO;
 using System.Linq;
 using System.Diagnostics;
+using System.Reflection;
 #if UNITY_2019_1_OR_NEWER
 using UnityEngine.UIElements;
 #else
@@ -68,6 +69,58 @@ public static void Exception(string header, Exception e)
         }
     }
 
+    internal static class ReflectionExtensions
+    {
+        const BindingFlags FLAGS = BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
+        static object Inst(this object self)
+        {
+            return (self is Type) ? null : self;
+        }
+
+        static Type Type(this object self)
+        {
+            return (self as Type) ?? self.GetType();
+        }
+
+        public static object New(this Type self, params object[] args)
+        {
+            var types = args.Select(x => x.GetType()).ToArray();
+            return self.Type().GetConstructor(types)
+                .Invoke(args);
+        }
+
+        public static object Call(this object self, string methodName, params object[] args)
+        {
+            var types = args.Select(x => x.GetType()).ToArray();
+            return self.Type().GetMethod(methodName, types)
+                .Invoke(self.Inst(), args);
+        }
+
+        public static object Call(this object self, Type[] genericTypes, string methodName, params object[] args)
+        {
+            return self.Type().GetMethod(methodName, FLAGS)
+                .MakeGenericMethod(genericTypes)
+                .Invoke(self.Inst(), args);
+        }
+
+        public static object Get(this object self, string memberName, MemberInfo mi = null)
+        {
+            mi = mi ?? self.Type().GetMember(memberName, FLAGS)[0];
+            return mi is PropertyInfo
+                ? (mi as PropertyInfo).GetValue(self.Inst(), new object[0])
+                : (mi as FieldInfo).GetValue(self.Inst());
+        }
+
+        public static void Set(this object self, string memberName, object value, MemberInfo mi = null)
+        {
+            mi = mi ?? self.Type().GetMember(memberName, FLAGS)[0];
+            if (mi is PropertyInfo)
+                (mi as PropertyInfo).SetValue(self.Inst(), value, new object[0]);
+            else
+                (mi as FieldInfo).SetValue(self.Inst(), value);
+        }
+    }
+
     public static class PackageUtils
     {
         const string kHeader = "<b><color=#c7634c>[PackageUtils]</color></b> ";