Form Variable Notes and Considerations

When using form variables, keep the following guidelines in mind:

A form variable's scope is the action page.
Prefix form variables with form when referencing them on the action page.
Surround variable values with pound signs (#) for output.
Text control form variables are always passed to the action page.
Checkboxes and radio buttons are only passed to the action page if an option is selected.
Checkboxes and radio buttons form variables generate errors on action pages if nothing is selected for the form controls.