Steps
In the Prompt Data Type section, select Logical.
By default, when you select Logical, all the options in the Valid Values section are disabled.
Select Next.
The Configure Default Prompt Value section appears.
In the Default Prompt Value list, select the value that you want to be selected by default. You can select True or False, or you can select All, which returns both True and False values. Then, select Finish.
The prompt appears in the Expression Builder window.
Select Done.
The Expression Builder window closes, and then, in the grid in the Conditions section, <expr> appears in the field on which you created the prompt.
Results
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