diff --git a/ObservatoryCore/PluginManagement/PluginCore.cs b/ObservatoryCore/PluginManagement/PluginCore.cs
index 3fa0637..0bb0a33 100644
--- a/ObservatoryCore/PluginManagement/PluginCore.cs
+++ b/ObservatoryCore/PluginManagement/PluginCore.cs
@@ -3,6 +3,7 @@ using Observatory.Framework.Files;
using Observatory.Framework.Interfaces;
using Observatory.NativeNotification;
using System;
+using System.Collections.ObjectModel;
using System.IO;
namespace Observatory.PluginManagement
@@ -96,47 +97,39 @@ namespace Observatory.PluginManagement
///
///
///
- public void AddGridItem(IObservatoryWorker worker, object item)
+ public void AddGridItem(IObservatoryWorker worker, List