How do I do this?

[Dennis_Knutson]

Please start a new thread instead of hijacking one that is totally unrelated. Include your code in the new thread.

[ET200]

Apologies...

[crossrulz]

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@diver81 wrote:

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Oh the fun of students who just throw random things together hoping for it to work instead of taking 10 seconds to actually think about the problem.

The comparison outputs a boolean (TRUE or FALSE).  That cannot be subtracted from.  That really should be done outside of your case structure and the result controls your case structure.