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The following transform options are available.
Expression Transformer
The Expression Transformer lets you write a regular expression to make changes to message data. Click the button to add a new row. In the Path column, enter the message field you want to transform (e.g., MSH-3). Click on the expression symbol to see a list of possible expressions. You can also start typing to see a list of matching expression possibilities.
Enter the parameters for the expression. Connexion will display an error message if the expression is invalid.
You can set the conditions under which the expression is run in the Conditions column. By default, expressions are always run. However, you could choose to only execute the expression when the value of the selected field matches something specific (e.g., when MSH-9.2 = RO1).
Enter an optional description for the expression transformer in the Description field.
Expressions are automatically saved.