How to control visibility of a parameter, through a calculated value, in a label, of a tag, with yes/no parameter

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Clarification: I want to have a window tag that has the option to show or hide window sill height.

So I add a shared parameter in window family, instance yes/no - ShowSillHeightInTag.

Than in tag family I add a label with a calculated value, but I get stuck on how to implement it.

It should be something along the lines:

IF (ShowSillHeightInTag, Sill Heigh, <don't show the label at all>)

I get stuck on "don't show the label at all" part. How do you get the label to not be visible if ShowSillHeightInTag parameter in window family, is unchecked?

[barthbradley]

Use a Calculated Value in the Tag to do this.  

BTW: Instance Parameters are of no use to a Tag.  You need to create different Family TYPES using different settings. 

...or is the objective here, to not Tag a Window if it doesn't have a Sill Height?  What Window doesn't?  That Parameter is omnipresent. 

[ToanDN · Accepted solution]

You cannot.  Omitting a label value only works with text label, not dimension or any kind of numeric value.  Create different tag types, one with the Sill height label, one without.

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@barthbradley wrote:

Use a Calculated Value in the Tag to do this.  

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That was the idea, but as @ToanDN said, it can't be done.

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...or is the objective here, to not Tag a Window if it doesn't have a Sill Height?  What Window doesn't?

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Yes, sometimes we do have windows with sill height of zero (it's rare, but more often than you' thought, actually). In those cases sill height is omitted from the tag.

I'll just create a completely different tag family for it, better to load additional family for such specific cases than to have a bunch of unnecessary types all the time.

[constantin.stroescu]

I can show you how I manage this into my projects:

• I create first a new Annotation Window Tag Family with two Labels ,in my case : a Label with Type Mark , another one with Sill Height
• then from Visible click on the small icon rectangle and create a New Associate Family Parameter -a Yes/Now Parameter
• this Parameter allow me to choose if I see or not the parameter into the Project

Revit_r5OGXCBFKj.png

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Loaded into Project:

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[ToanDN]

They are different tag types.  You cannot just select a tag instance and click the box.