XL97: "Invalid Use of Null" Error Setting OnRepeat Method

When you run a macro that sets the Text and Procedure arguments for the OnRepeat method to Null, you may receive the following error message: NOTE: Your macro may run successfully in earlier versions of Microsoft Excel but fail in Microsoft Excel 97.

You cannot use Null for the parameters of the OnRepeat method as a valid means to reset the Repeat command. The Text and Procedure parameters require a String value. This behavior is by design.

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs.
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For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS (http://support.microsoft.com/default.aspx?scid=fh;en-us;cntactms) In earlier versions of Microsoft Excel, you can set the parameters of the OnRepeat method to Null and not receive an error message. If you set the OnRepeat argument to Null, you reset the action that occurs when the user selects the Repeat command on the Edit menu (or presses CTRL+Y).

The following macro runs successfully in Microsoft Excel versions 5.0 and 7.0 but fails in Microsoft Excel 97:

To correct this problem so that the macro runs without error, set the OnRepeat arguments to empty string values instead of Null: