diff --git a/LINQ/LINQ/Interpreter/Expressions/FuncEval.vb b/LINQ/LINQ/Interpreter/Expressions/FuncEval.vb
index fce47c8..372e7de 100644
--- a/LINQ/LINQ/Interpreter/Expressions/FuncEval.vb
+++ b/LINQ/LINQ/Interpreter/Expressions/FuncEval.vb
@@ -31,7 +31,7 @@ Namespace Interpreter.Expressions
                 args.Add(item.Exec(context))
             Next
 
-            Dim result As Object = invoke(args.ToArray)
+            Dim result As Object = DirectCast(invoke, Callable).Evaluate(args.ToArray)
 
             Return result
         End Function
diff --git a/LINQ/LINQ/Interpreter/Expressions/Keywords/Options/PipelineKeyword.vb b/LINQ/LINQ/Interpreter/Expressions/Keywords/Options/PipelineKeyword.vb
index b854cf0..7d4eebc 100644
--- a/LINQ/LINQ/Interpreter/Expressions/Keywords/Options/PipelineKeyword.vb
+++ b/LINQ/LINQ/Interpreter/Expressions/Keywords/Options/PipelineKeyword.vb
@@ -20,6 +20,10 @@ Namespace Interpreter.Expressions
                 bin.right = FixLiteral(bin.right)
             ElseIf TypeOf expr Is Literals Then
                 expr = New SymbolReference(DirectCast(expr, Literals).value)
+            ElseIf TypeOf expr Is FuncEval Then
+                DirectCast(expr, FuncEval).parameters = DirectCast(expr, FuncEval).parameters _
+                    .Select(AddressOf FixLiteral) _
+                    .ToArray
             End If
 
             Return expr
diff --git a/LINQ/LINQ/Runtime/Callable.vb b/LINQ/LINQ/Runtime/Callable.vb
index b1ee5ff..41d9a5f 100644
--- a/LINQ/LINQ/Runtime/Callable.vb
+++ b/LINQ/LINQ/Runtime/Callable.vb
@@ -5,6 +5,7 @@ Namespace Runtime
     Public Class Callable
 
         Dim method As MethodInfo
+        Dim parameters As ParameterInfo()
 
         Public ReadOnly Property name As String
             Get
@@ -14,6 +15,7 @@ Namespace Runtime
 
         Sub New(method As MethodInfo)
             Me.method = method
+            Me.parameters = method.GetParameters
         End Sub
 
         Sub New(math1 As Func(Of Double, Double))
@@ -25,7 +27,21 @@ Namespace Runtime
         End Sub
 
         Public Function Evaluate(params As Object()) As Object
-
+            Dim args As New List(Of Object)
+
+            For i As Integer = 0 To parameters.Length - 1
+                If i >= params.Length Then
+                    If parameters(i).IsOptional Then
+                        args.Add(parameters(i).DefaultValue)
+                    Else
+                        Throw New InvalidExpressionException
+                    End If
+                Else
+                    args.Add(CTypeDynamic(params(i), parameters(i).ParameterType))
+                End If
+            Next
+
+            Return method.Invoke(Nothing, args.ToArray)
         End Function
     End Class
 End Namespace
\ No newline at end of file