I have 50 mechanical equipment inside the project.
I am trying to delete all listed parameter of all families from inside the project.
THis script works fine inside the family . How to workable from projects also.
Need help.
Thank you.
project.
REMOVE PARAMETER From project.dyn (2.6 KB)
I would advice looking towards the Orchid package which have tons of nodes for working with families instead of using a custom python script written to work on active document 
@Jonathan.Olesen I found orchid package very useful but remove parameter works fine just inside Family.
Cannot delete from the projects to all family parameter.
Do you have any idea .
Thank you.
You can visit www.revitapidocs.com and check for a method to delete the project parameters unless someone in here can remember it :-).
EDIT: Try have a look at this tread. It is written in C#.
https://forums.autodesk.com/t5/revit-api-forum/deleting-a-non-shared-project-parameter/td-p/5975020
Hi @shrawanram,
I’m not exactly sure what you have in mind, but maybe the “Orchid” node below can help you.
EDIT: the picture above is updated (initialy forgot the “Element.ElementType” node).
Kind regards,
Mark
Hi,
If you haven’t found a better approach yet, you might consider this…
It deletes parameters from multiple families in a folder.
You might need to save out your project families and then reload them.
Hope that’s useful,
Mark
FamilyParameterDelete.dyn (6.9 KB)
I got Error message on Beaker Package
and for orchid package:
Warning: Parameter.Delete operation failed.
Please run this command in a family document.
@CVestesen
Thank you. But still too high level for beginners.
just trying,
Do you have any nodes that works for inside project ?
@shrawanram, I forgot to mention the “Element.ElementType” node, so i updated the picture above.
@erfajo, I didn’t know you had a similar node (you’re package keeps getting better 
).
Kind regards,
Mark
@MJB-online
Just remind you that i am working on Project not in revit family.
i GOT ERROR IN PARAMETER.DELETE NODE (ORCHID)
**Warning: Parameter.Delete operation failed. **
**Value cannot be null.**
**Parameter name: familyParameter**
Any help will be appreciated.
Thank you.
@erfajo
I will put some issue in github .
Hope it will solved soon.
Thank you.
is there any other way to do it ?
it will make me 366 save as node for family. ?
Hey,
This works for me…
It runs from the project, saves out the families, edits their parameters then reloads them.
The only quirk is that I couldn’t get my Orchid File Load to work. This might be something to do with my setup.
Hope that helps,
Mark
FamilyParameterDelete-2.dyn (23.8 KB)Dont know what causing this error
@Mark.Ackerley
That’s a new one to me! Is it a clockwork node? Perhaps message the package creator?
Sorry,
Mark
Think your error is that the all elements of category node you’re using is returning a function as you have not supplied it with enough information to run…
@erfajo That would be helpful for me .
Can you share ?
hi @shrawanram, you can use this script to delete project parameters by their names.
#(should be fine with 1.3.x or 2.x.x versions)
import clr
clr.AddReference('RevitAPI')
clr.AddReference("RevitServices")
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Structure import *
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument
# input[0]
elements = IN[0]
# params id
todelete = []
# check/make list
if not isinstance(elements, list):
elements = [elements]
# collect parameters
parameters = FilteredElementCollector(doc).OfClass(ParameterElement).ToElements()
# loop input params
for elem in elements:
# loop existing params
for param in parameters:
# if name found
if param.Name == elem:
# append id to delete list
todelete.append(param.Id)
# start transaction
TransactionManager.Instance.EnsureInTransaction(doc)
# delete from document
res = [doc.Delete(i) for i in todelete]
# end transaction
TransactionManager.Instance.TransactionTaskDone()
OUT = res