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I have the following Regex ($(random)|IF|NOT|AND)

$(random) is a published parameter for FME Server, I want the user to be able to type any extra 'reserved' words they would require. This works fine when the $(random) parameter is populated, the problem is when it is left blank.

How can I ignore the blank published parameter when the user decides?

One solution is to use the ParameterFetcher with a Tester to see if anyting was specified for the published parameter "random".

You then create the regex accordingly.

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