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In this step, you will once again use the UPDATE.Click event routine and set a breakpoint on the first IF_STATUS command, with a break on value setting for variable IO$STS. This is a 2 character I/O status, returned by the UPDATE command. When a validation error occurs, it will contain 'VE'.

1.  Set a breakpoint on the first IF_STATUS command.

2.  Run the form in debug mode. When the editor is displayed at the CreateInstance routine, scroll down to the UPDATE.Click event routine and set a break point on the first IF_STATUS command.

3.  In the variables tab, select the IO$STS variable and use the right mouse menu to Break on Value Condition.
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4.  In the Breakpoint Properties dialog, select the Value tab and set the breakpoint to break when IO$STS is equal to 'VE'
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5.  Select OK and press F5 to run the form.

6.  Fetch a department and press Update. Debug should not break because IO$STS is not equal 'VE'

7.  Fetch a department and clear the department description field, and press Update. Debug should now break on the IF_STATUS command.

8.  Close your form and close it in the editor. You have completed this exercise.
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