Imports System Imports uCalcSoftware Public Module Program Public Sub Main() Dim uc As New uCalc() Dim t As New uCalc.Transformer() Dim myRule = t.FromTo("A", "B") '// Get the parent from the rule Dim parent = myRule.ParentTransformer '// Check if the parent is the original transformer using its unique memory index Console.WriteLine(parent.MemoryIndex = t.MemoryIndex) End Sub End Module