First create solution

Nuvolar.Module/BusinessObjects/EmailSender/HTMLMailTemplateVC.vb

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+
+Imports DevExpress.ExpressApp
+Imports DevExpress.ExpressApp.Actions
+Imports System.Windows.Forms
+Imports DevExpress.ExpressApp.Utils
+
+Public Class HTMLMailTemplateVC
+    Inherits ViewController
+
+    Public Sub New()
+        MyBase.New()
+
+        'This call is required by the Component Designer.
+        InitializeComponent()
+        RegisterActions(components)
+
+    End Sub
+
+    Private Sub aCopyProperty_Execute(sender As Object, e As SimpleActionExecuteEventArgs) Handles aCopyProperty.Execute
+        Try
+            Dim _DetailView As DetailView = TryCast(View, DetailView)
+            Dim _HTMLMailTemplate As HTMLMailTemplate = TryCast(_DetailView.CurrentObject, HTMLMailTemplate)
+            If _HTMLMailTemplate.ContactsProperties IsNot Nothing Then
+                Dim _copy As String = String.Format("{{{0}}}", _HTMLMailTemplate.ContactsProperties)
+                Clipboard.Clear()
+                '  Clipboard.SetText(_copy)
+                Clipboard.SetData(DataFormats.Text, CType(_copy, String))
+            End If
+        Catch ex As Exception
+            MsgBox(ex.Message, MsgBoxStyle.OkOnly + MsgBoxStyle.Critical, CaptionHelper.GetLocalizedText("Exceptions\NuvolarExceptions", "MsgBoxCheckItAgain"))
+        End Try
+
+    End Sub
+
+
+
+End Class