How to Access Wall Instance Parameter Top Constraint Value Unconnected?

1

Hi guys, good day
Referring to snippets below, I am currently practicing series connection and having difficulty accessing the Top constraint parameter value “Unconnected” in the drop down list.

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Appreciate someone guidance about this

2

I think I got it, :slight_smile: But, is this still a series method or parallel? and any other way to do this?

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3

Not quite sure I understand your question. Unconnected Height is only modifiable if Top Constraint is Unconnected. You would have to change Top Constraint to Unconnected if it isn’t already.

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4

Hi, do you mean manually or via SetParameterByName?

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Sincerely,
christian.stan

5

Sorry, I was going off of the above example. The Top Constraint parameter is an ElementId parameter, which means if you want to do this in Dynamo you’d either have to feed it the InvalidElementId via the API or use something like Element.SetParameterToNone from Springs package to reset the parameter value.

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6

Hi, I succeeded with your advice, thank you.

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import sys
import clr
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager 
from RevitServices.Transactions import TransactionManager 

clr.AddReference("RevitAPI")

import Autodesk 
from Autodesk.Revit.DB import *

doc = DocumentManager.Instance.CurrentDBDocument




w=UnwrapElement(IN[0])
paramcs=w.get_Parameter(BuiltInParameter.WALL_HEIGHT_TYPE)
paramht=w.get_Parameter(BuiltInParameter.WALL_USER_HEIGHT_PARAM)
TransactionManager.Instance.EnsureInTransaction(doc)
paramcs.Set(ElementId.InvalidElementId)
paramht.Set(IN[1]/0.3048)
TransactionManager.Instance.TransactionTaskDone()
OUT =paramcs.AsValueString()+" "+str(IN[1])+" m imposé"

cordially
christian.stan