Instance family parameter issue

[BBV90]

Hello, attached you can see the family, with the type family I did before I was able to change the size of the length when creating a type and then the center(middle) chair would show and other chairs would disappeared. But when using the same formula for instance family which I'm able to change the size with arrows it wont work . The two array chairs wont go away. 

Would appreciate if you can help.  

[L.Maas]

Check you family

You can see that if the width < 1300 mm the middle chair is set to visible

(You probably have to fix the position as it is not in the middle)

If I look at the chairs in the array then visibility of those are not controlled by parameters

So they also remain visible

[BBV90]

thank you for your response, but changing the visibility didn't help. any other suggestions 

[ToanDN]

You need to assign visibility properly for arrayed chairs versus alone chairs.

On top of that, I changed the alone chair to a different type so that you won't get the warning of elements occupy the same place.

See revised family.

[BBV90]

thank you, but why is this happening ( photo attached) unless you go deep in chairs overlap

[ToanDN · Accepted solution]

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@BBV90 wrote:

thank you, but why is this happening ( photo attached) unless you go deep in chairs overlap

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I have fixed some formulas.

[BBV90]

thank you i happens again but i will play around with the formulas