Purpose

This section describes the substitutions you can make in the files used in the construction of pages or emails.

All parameters are available for substitution, provided that the transaction has reached the appropriate stage. For instance, there would not be a transStatus value available before a transaction had been processed to completion. If you use an unavailable parameter in substitution then the default as specified in the substitution tag will be used.

For details of the parameters available, please refer to Hosted Payment Page (HTML Redirect) Parameters.

Use

Please refer to the following sections for more details about substitution tags:

• Parameter and File Substitution - you can substitute parameter values and embed files

• Substituting the Value of Parameters - how to substitute parameter values

• Substituting the Value of a Display Property - how to substitute display parameter values

• Embedding the Contents of a File - embed a file

• Embedding Tags Within Tags - nesting tags

• Custom Parameter Substitution - making use of your own parameters