Forums >> Revit Building >> Technical Support >> Using a Yes/No Parameter to control the visibility of another Label in a Tag

britc

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Joined: Tue, Apr 24, 2012
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I am trying to create our typical Light fixtures with an on/off parameter for our Emergency Light annotation. I have the hatch for the "Emergency Light" on a Yes/No Parameter (instance) so that once in the project you can choose which ones will display the hatch by simply checking the box. Along with this I was hoping to tie my Light Fixture Tag into the same control. I would like to use the same tag and have a "X" displayed at the end of the name if the "Emergency Light" box is checked on per light. If the box is not checked, I don't want the "X" at the end of the tag displayed (or a space could be there...)

So far I have been using an overall shared parameter between my light fixture, the tag and the actual building model.

The first method I tried was to have the Shared Parameter set as a yes/no value and in the light fixture family set the formula to Emergency Light Tag = Emergency Light. This worked essentially...but in the model it produced a "yes" or a "no" at the end of the tag instead of my desired "X" which was in the label in the tag.

So I determined I needed a text shared parameter instead and was trying to use an IF statement that went along the lines of Emergency Light Tag = IF (Emergency Light = 1, "X", " "). The error I receive with this is "Improper use of boolean expressions"

I am not sure where my error is. I have also tried to add a visibility parameter to a simple text in the tag, but that doesn't seem to work. Any thoughts? Thanks!

(Revit 2013)

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Revit 2013

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TKennedy

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Joined: Wed, Oct 7, 2009
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Revit Y/N parameters work like this in formulas: if(Emergency Light, "X", "")

It only uses the "True" condition in the formula, so there is no need for the '=1' of '= no' or anthing like that.

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britc

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Joined: Tue, Apr 24, 2012
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AHHH, thank you!!! This was driving me crazy! Works perfectly now!!

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Edog79

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Joined: Fri, Jun 25, 2010
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@britc

Can you either explain further how you got this to work (I'm having the exact same issue with lighting I'm creating), or upload your model that you got to work so I can see how you used the formula to control the parameter?  I really appreciate any help you can offer!

*Update - Never mind, got it figured out

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