Open the document in EscapeE to attach a plugin to a new field or an existing field: see To attach a plugin. Click the Configure button for EVALUATE on the Action page of the Fields dialog to display the evaluate dialog for configuration:

1.Set up the field for evaluation:
oeither select Expression and enter an RS/2 expression or function directly into the edit box,
oor select File name and enter the name of an external file containing the RS/2 script to be run by EVALUATE plugin. The RS/2 script must return a value in ASYMBOL if it is intended to alter the value of the attached field.
2.Tick Modifies the page if the evaluated field value affects the appearance of the document.
3.Click OK.