diff --git a/ZeroLevel.UnitTests/DSAUnitTest.cs b/ZeroLevel.UnitTests/DSAUnitTest.cs
index 8a09943..955a061 100644
--- a/ZeroLevel.UnitTests/DSAUnitTest.cs
+++ b/ZeroLevel.UnitTests/DSAUnitTest.cs
@@ -1,5 +1,4 @@
-using System;
-using System.Linq;
+using System.Linq;
 using Xunit;
 using ZeroLevel.Services.Serialization;
 using ZeroLevel.Services.Trees;
diff --git a/ZeroLevel.UnitTests/FSUtilsTest.cs b/ZeroLevel.UnitTests/FSUtilsTest.cs
index 1e7721f..18a7acb 100644
--- a/ZeroLevel.UnitTests/FSUtilsTest.cs
+++ b/ZeroLevel.UnitTests/FSUtilsTest.cs
@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using Xunit;
 using ZeroLevel.Services.FileSystem;
 
diff --git a/ZeroLevel/Services/Config/BaseConfiguration.cs b/ZeroLevel/Services/Config/BaseConfiguration.cs
index 1a4d370..a911911 100644
--- a/ZeroLevel/Services/Config/BaseConfiguration.cs
+++ b/ZeroLevel/Services/Config/BaseConfiguration.cs
@@ -586,7 +586,7 @@ namespace ZeroLevel.Services.Config
             if (string.IsNullOrWhiteSpace(line)) yield return StringToTypeConverter.TryConvert(line, elementType);
             foreach (var part in line.Split(','))
             {
-                if (part.IndexOf('-') >= 0)
+                if (TypeHelpers.IsNumericType(elementType) && part.IndexOf('-') >= 0)
                 {
                     var lr = part.Split('-');
                     if (lr.Length == 2)
diff --git a/ZeroLevel/Services/Reflection/TypeHelpers.cs b/ZeroLevel/Services/Reflection/TypeHelpers.cs
index eda7d18..929f639 100644
--- a/ZeroLevel/Services/Reflection/TypeHelpers.cs
+++ b/ZeroLevel/Services/Reflection/TypeHelpers.cs
@@ -28,6 +28,27 @@ namespace ZeroLevel.Services.Reflection
             return IsAssignableToGenericType(baseType, genericType);
         }
 
+        public static bool IsNumericType(Type type)
+        {
+            switch (Type.GetTypeCode(type))
+            {
+                case TypeCode.Byte:
+                case TypeCode.SByte:
+                case TypeCode.UInt16:
+                case TypeCode.UInt32:
+                case TypeCode.UInt64:
+                case TypeCode.Int16:
+                case TypeCode.Int32:
+                case TypeCode.Int64:
+                case TypeCode.Decimal:
+                case TypeCode.Double:
+                case TypeCode.Single:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
         public static bool IsEnum(Type type)
         {
             return type.Return(t => t.IsEnum, false);
diff --git a/ZeroLevel/Services/Shedulling/DateTimeSheduller.cs b/ZeroLevel/Services/Shedulling/DateTimeSheduller.cs
index a3dd160..86f6e17 100644
--- a/ZeroLevel/Services/Shedulling/DateTimeSheduller.cs
+++ b/ZeroLevel/Services/Shedulling/DateTimeSheduller.cs
@@ -44,7 +44,7 @@ namespace ZeroLevel.Services.Shedulling
             {
                 try
                 {
-                    result.Callback(result.Key);
+                    result.Callback.Invoke(result.Key);
                 }
                 catch (Exception ex)
                 {