PARAMETER HIDE OR VALUE SET TO 0

[mihir_shah]

Good morning All,

Attached is multilayer tray support. plan to extract MTO/schedule from it.

- all parameters are shared and tray arms are hide based on visibility.

is there any way to make length of arm 0 if visibility of that ARM is set as hide.

[HermanSolomon]

Hi mihir_shah,

Nice family 🙂 Yes, there is a way to control the Arm visibility. If you add the following formula into the 1-left_from_Bottom Formula Column, The arm length can be controlled. An explanation of the formula would be: if([1st from base] <IS ON>, Length=1200, <IS OFF><Length=0>)

[mihir_shah]

thx a lot.

one more help.

in place of 1200 constant is it possible to get instance parameter length from property bar.

[HermanSolomon · Accepted solution]

Yes it is possible. However, the first thing you will need to do, is to change your parameter naming convention. Adding the text "1-Left" as a parameter name will cause Revit to see the dash as a minus sign, when used in a formula.

In the image below I have replaced the dash with an underscore. I have also created a driving parameter called 1_Left User Dimension. This parameter will drive the 1_Left From Bottom parameter.  

The results can be seen below.

[mihir_shah]

thx once again

yes I did it and it is coming perfect...

cheers