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4.19 Using Boolean Parameters

Using Boolean Parameters

Boolean parameters are unique from the other parameter types because they can only hold one of two values and they can be grouped together. With other types of parameters, you can list many possible choices in its list of values. But Boolean parameters don’t let you decide the list of values.

Although the possible values are always True and False, you aren’t required to display True and False to the user. You can present the user with a better prompt by changing the Description of each parameter. For example, a report that optionally formats low inventory items in red could have two prompts which say: “Highlight low inventory items” for True and, “Don’t show inventory alerts” for False. Changing the description makes it easier for the user to understand what the report is asking for. The following figure shows a parameter that displays Yes and No rather than True and False.

Figure 4-9. Entering a Boolean parameter value.

Grouping Boolean Parameters

Boolean parameters have an optional...

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