diff --git a/EasyEplanner.Tests/Editor.Test/ObjectProperty.Test.cs b/EasyEplanner.Tests/Editor.Test/ObjectProperty.Test.cs
index c6a738bb..3a37415e 100644
--- a/EasyEplanner.Tests/Editor.Test/ObjectProperty.Test.cs
+++ b/EasyEplanner.Tests/Editor.Test/ObjectProperty.Test.cs
@@ -259,9 +259,9 @@ public void IsDrawOnEplanPage_EmptyObject_ReturnsFalse()
         }
 
         [Test]
-        public void GetObjectToDrawOnEplanPage_EmptyObject_ReturnsNull()
+        public void GetObjectToDrawOnEplanPage_EmptyObject_ReturnEmty()
         {
-            Assert.IsNull(GetEmptyProperty().GetObjectToDrawOnEplanPage());
+            CollectionAssert.IsEmpty(GetEmptyProperty().GetObjectToDrawOnEplanPage());
         }
 
         [Test]
diff --git a/EasyEplanner.Tests/TechObject.Test/Base.Test/Properties.Test/ActionParameter.Test.cs b/EasyEplanner.Tests/TechObject.Test/Base.Test/Properties.Test/ActionParameter.Test.cs
index df24a5de..02d8bfe3 100644
--- a/EasyEplanner.Tests/TechObject.Test/Base.Test/Properties.Test/ActionParameter.Test.cs
+++ b/EasyEplanner.Tests/TechObject.Test/Base.Test/Properties.Test/ActionParameter.Test.cs
@@ -3,6 +3,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Editor;
 using EplanDevice;
 using Moq;
 using NUnit.Framework;
@@ -109,5 +110,40 @@ public void ModifyDevName()
                System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)
                .SetValue(null, DeviceManager.GetInstance());
         }
+
+        [Test]
+        public void IsDrawToEplanPage_True()
+        {
+            Assert.IsTrue(new ActionParameter("", "").IsDrawOnEplanPage);
+        }
+
+        public void IsDrawToEplanPage_False() 
+        {
+            var actionParameter = new ActionParameter("ap", "ap");
+
+            var dev = new V("OBJ1V1", "+OBJ1-V1", "", 1, "OBJ", 1, "");
+
+            var deviceManager = Mock.Of<IDeviceManager>(m =>
+                m.GetDeviceByEplanName("OBJ1V1") == dev &&
+                m.GetDeviceIndex("OBJ1V1") == 1 &&
+                m.GetDeviceByIndex(1) == dev);
+
+            typeof(BaseParameter).GetField("deviceManager",
+                System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)
+                .SetValue(null, deviceManager);
+
+            actionParameter.SetNewValue("OBJ1V1");
+            var res = actionParameter.GetObjectToDrawOnEplanPage();
+
+            Assert.Multiple(() =>
+            {
+                Assert.AreEqual(dev, res.FirstOrDefault().DrawingDevice);
+                Assert.AreEqual(DrawInfo.Style.GREEN_BOX, res.FirstOrDefault().DrawingStyle);
+            });
+
+            typeof(BaseParameter).GetField("deviceManager",
+                System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic)
+                .SetValue(null, DeviceManager.GetInstance());
+        }
     }
 }
diff --git a/src/Editor/ObjectProperty.cs b/src/Editor/ObjectProperty.cs
index b633d415..c11ba9df 100644
--- a/src/Editor/ObjectProperty.cs
+++ b/src/Editor/ObjectProperty.cs
@@ -11,7 +11,7 @@ namespace Editor
     /// </summary>
     public class ObjectProperty : ITreeViewItem, IHelperItem
     {
-        public ImageIndexEnum ImageIndex { get; set; } = 
+        public ImageIndexEnum ImageIndex { get; set; } =
             ImageIndexEnum.NONE;
 
         /// <param name="name">Имя свойства.</param>
@@ -108,7 +108,7 @@ public virtual string[] DisplayText
             {
                 if (value.ToString() == defaultValue.ToString())
                 {
-                    return new string[] { name, 
+                    return new string[] { name,
                         StaticHelper.CommonConst.StubForCells };
                 }
                 else
@@ -128,7 +128,7 @@ public virtual string[] EditText
                     provider.NumberDecimalSeparator = ".";
 
                     double v = (double)value;
-                    return new string[] { "", 
+                    return new string[] { "",
                         string.Format( provider, "{0:0.##}", v ) };
                 }
 
@@ -164,7 +164,7 @@ public virtual bool IsCopyable
 
         public virtual object Copy()
         {
-            if(IsCopyable)
+            if (IsCopyable)
             {
                 return this;
             }
@@ -335,7 +335,7 @@ public bool IsLocalRestrictionUse
 
         public virtual bool IsDrawOnEplanPage => false;
 
-        public virtual List<DrawInfo> GetObjectToDrawOnEplanPage() => null;
+        public virtual List<DrawInfo> GetObjectToDrawOnEplanPage() => new List<DrawInfo>() { };
 
         public virtual void GetDisplayObjects(out EplanDevice.DeviceType[] devTypes,
             out EplanDevice.DeviceSubType[] devSubTypes, out bool displayParameters)
diff --git a/src/TechObject/Base/Properties/ActionParameter.cs b/src/TechObject/Base/Properties/ActionParameter.cs
index fc33bbc9..65801f11 100644
--- a/src/TechObject/Base/Properties/ActionParameter.cs
+++ b/src/TechObject/Base/Properties/ActionParameter.cs
@@ -58,7 +58,7 @@ public override bool SetNewValue(string newValue)
             Parameter = null;
 
             // В случае привязки нескольких устройств (с ФСА) оставляем последнее 
-            newValue = newValue.Trim().Split(' ').Last(); 
+            newValue = newValue.Trim().Split(' ').LastOrDefault(); 
             newValue = string.IsNullOrEmpty(newValue) ? "-1" : newValue;
 
             return base.SetNewValue(newValue);