Imports System Imports uCalcSoftware Public Module Program Public Sub Main() Dim uc As New uCalc() Dim t As New uCalc.Transformer() '// 1. Parent rule finds content inside parentheses. Dim parentRule = t.FromTo("({body})", "({body})") '// 2. Get the local transformer for the parent. Dim local_t = parentRule.LocalTransformer '// 3. Child rule runs only inside the parentheses. local_t.FromTo("this", "THIS") Dim text = "do not find this, but (find this) and not this" Console.WriteLine(t.Transform(text)) End Sub End Module