Mapping to incorrect enum

[quinn-at-ihsmarkit]

When I include a custom control in another control, each using a different enum in a CalcBinding, the first enum tag to name mapping gets overwritten with the second.
This new value is then passed to DynamicExpresso and the string parsing fails with an exception.
Please see the attached code for a demonstration.

• In the main window, it isn't able to decipher the PressureSource value because it tries to look it up against the FlowPath enum.
  DynamicExpresso.Exceptions.ParseException
  HResult=0x80131500
  Message=No property or field 'eForecastPressureMethod_Wellhead' exists in type 'FlowpathType' (at index 12).
  Source=DynamicExpresso.Core
  StackTrace:
  at DynamicExpresso.Parsing.Parser.GeneratePropertyOrFieldExpression(Type type, Expression instance, Int32 errorPos, String propertyOrFieldName)
  WpfXamlPlayground.zip