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DriveWorks Pro 21
IfError

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IfError

Checks to see if its first argument is an error. If the value isn't an error it is returned as-is, otherwise a secondary value is returned.

When using this function it is important to understand the difference between and error value and an error string.

Please see the topic Info: Error Value And Error String for more information.

Syntax

IfError([Primary Value], [Error Replacement Value])

Where:

Primary Value is the value to check for an error.

Error Replacement Value is the value to use if the primary value is an error.

Examples

RuleMeaning
IfError(DWVariableLength,2475)Will return 2475 when the value coming from the variable Length is an error.