From 47cd94dfffb88ab2d47b40a8bcb83831a2c976ac Mon Sep 17 00:00:00 2001
From: albertmata <albertmata@gmail.com>
Date: Fri, 18 Mar 2016 18:43:20 +0100
Subject: [PATCH] ActionVariable actionVar.GetVariables can return null.

---
 .../Asterisk.NET/Manager/ManagerConnection.cs          | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Asterisk.2013/Asterisk.NET/Manager/ManagerConnection.cs b/Asterisk.2013/Asterisk.NET/Manager/ManagerConnection.cs
index 0c1eb81..2300c32 100644
--- a/Asterisk.2013/Asterisk.NET/Manager/ManagerConnection.cs
+++ b/Asterisk.2013/Asterisk.NET/Manager/ManagerConnection.cs
@@ -2162,12 +2162,16 @@ namespace AsterNET.Manager
 			}
 
             IActionVariable actionVar = action as IActionVariable;
-            if(actionVar != null && actionVar.GetVariables().Count > 0)
+            if ( actionVar != null )
             {
-                sb.Append(string.Concat("Variable: ", Helper.JoinVariables(actionVar.GetVariables(), VAR_DELIMITER, "="), Common.LINE_SEPARATOR));
+                var variables = actionVar.GetVariables();
+                if ( variables != null && variables.Count > 0 )
+                {
+                    sb.Append( string.Concat( "Variable: ", Helper.JoinVariables( actionVar.GetVariables(), VAR_DELIMITER, "=" ), Common.LINE_SEPARATOR ) );
+                }
             }
 
-			sb.Append(Common.LINE_SEPARATOR);
+            sb.Append(Common.LINE_SEPARATOR);
 			return sb.ToString();
 		}
 		#endregion