1. Click on Report, Select Expert, Show Formula, Formula Editor
  2. Enter an alternate TRUE condition to display all records for that parameter (see examples below)
  3. Click Save & Close
Example 1: Using "ALL" as a default value in the parameter

if {?ParameterField} <> 'ALL' then {table.Field} = {?ParameterField} else True

Example 2: Using a blank with no default values set up for the parameter

if {?ParameterField} <> "" then {table.Field} = {?ParameterField} else True


Note: For more information on creating parameters, see How to create a parameter field.