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PI Calculation Sum boolean tags

Question asked by mjcordeiro on Aug 11, 2019
Latest reply on Aug 16, 2019 by Dan Fishman

I need to make a PI Calculation with 4 boolean tags (need to sum them), I've tried to make it like this:

'Tag1'+'Tag2'+'Tag3'+'Tag4'

But this generetes an error: "Error Evaluating Tag or Expression"

The tags are correct, I'm supposing it's because they are boolean, is this correct?

How can I make the sum of those tags with PI Calculation?

Thanks

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