Set phase demolished to None

Is it possible set the demolished phase of elements to “None” by Dynamo?

Our background: We use a different program for out cost estimations which needs an IFC-file to work with. Because of the limitations in the Revit IFC-Export we need to set up a separate demolition phase, which is obviously not ideal, but no way around that, if we want to distinguish the demolished elements in the calculation program.
To make the phase-management in Revit easier, I want to set the demolished phase automatically with dynamo.

The definition I have so far is fairly simple. I can set the demolished phase to a different phase, but I can’t set it to None. I have tried None, Null, 0, empty list. Any suggestions? Or is this one of those cases that can only by solved by python?

I’m pretty sure you’ll need Pyhon for this.
I haven’t tested this but I am pretty sure the technique used in the thread below could be helpful:

You can do it like this:

# Copyright(c) 2016, Konrad K Sobon
# @arch_laboratory,

# Import Element wrapper extension methods
import clr
import Revit

# Import DocumentManager and TransactionManager
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument

# Import RevitAPI
import Autodesk
from Autodesk.Revit.DB import *

import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'

#The inputs to this node will be stored as a list in the IN variable.
dataEnteringNode = IN

def ProcessList(_func, _list):
    return map( lambda x: ProcessList(_func, x) if type(x)==list else _func(x), _list )

def Unwrap(item):
	return UnwrapElement(item)

def SetPhaseToNone(e):
	return e

if isinstance(IN[0], list):
	elements = ProcessList(Unwrap, IN[0])
	elements = [Unwrap(IN[0])]

	errorReport = None
	output = ProcessList(SetPhaseToNone, elements)
	# if error accurs anywhere in the process catch it
	import traceback
	errorReport = traceback.format_exc()

#Assign your output to the OUT variable
if errorReport == None:
	OUT = output
	OUT = errorReport



Wow. This forum is incredible. Works like a charm. Thanks a lot.
If someone else has a similar problem, I upload my finished definition:
Phase-Mapping.dyn (21.3 KB)

1 Like

Thank you!

I have similar issue. Because Revit won’t export elements that have “Phase Demolished” set to something to IFC file (logic is that they are demolished and won’t exist). I need to change all of them back to “Phase Demolished: none”. But I’m able to only get it working partially (not for all the elements) - using the same Python script suggested in this topic.

I have tried different ways of selecting items (all in active view and by category). Seems that it’s working in a selecting only couple of times, or in some small demo project…

TEst3_.dyn (29.4 KB)

Try Like this…

Phas None.dyn (5.4 KB)

This worked like a charm! Thanks a lot!