crystal null value

I have a field called "Out Of Service Date"  I want to see all customers without a date entered in it and or filter out any that do.    When I setup a parameter to select a customer I do not want to see any customers with a out of service date basically?

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evendAsked:
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mlmccCommented:
To select all customers with NO out of service date

IsNull({OutOfServiceDateField})

To get customers WITH an out of service date

  NOT IsNull({OutOfServiceDateField})

mlmcc

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evendAuthor Commented:
Perfect!
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