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Calculation to check Container valid reference.

rrrichie
in Calculation Engine (Define Fields)

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Currently I have a script which walks through container fields and I check on error 100 to see if the file referenced in the container field still exists. Any ideas on how to do this with a calculation?

If you check on IsEmpty or IsValid don't work, cause FM 6 puts a nice "Could not draw this file" picture in the container, so it isn't empty or valid.

If the referenced file is an fp5 and rel is a constant (1::1) relationship to the file, then Case( not rel::constant = 1, "This file does not exist." ) may work for you.

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https://fmforums.com/topic/19478-calculation-to-check-container-valid-reference/
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