Find and Replace Dimension Override

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Very simple and compact graph for Finding and Replacing override values in ALL dimensions in the project.

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NOTE this has been formatted to work with CPython3 not IronPython2

#Sean Page, 2021
import clr

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('System')
from System.Collections.Generic import List

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)

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

doc = DocumentManager.Instance.CurrentDBDocument

results = []
StrFind = IN[0]
StrReplace = IN[1]
#Do some action in a Transaction
TransactionManager.Instance.EnsureInTransaction(doc)
#Get all dimensions in the entire project
dims = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Dimensions).WhereElementIsNotElementType().ToElements()

#Loop every dimension
for dim in dims:
#This first group will check for values when the dimension is singular or doesn't have multiple segments
    temp = []
    #Check each of the Override options for the search value (Above, Below, Prefix, Suffix,ValueOverride)
    if dim.Below and StrFind in dim.Below:
       temp.append(dim)
       #Replace with the search criteria (typical)
       dim.Below = dim.Below.replace(StrFind,StrReplace)
    if dim.Above and StrFind in dim.Above:
       temp.append(dim)
       dim.Above = dim.Above.replace(StrFind,StrReplace)
    if dim.ValueOverride and StrFind in dim.ValueOverride:
       temp.append(dim)
       dim.ValueOverride = dim.ValueOverride.replace(StrFind,StrReplace)
    if dim.Prefix and StrFind in dim.Prefix:
        temp.append(dim)
        dim.Prefix = dim.Prefix.replace(StrFind,StrReplace)
    if dim.Suffix and StrFind in dim.Suffix:
        temp.append(dim)
        dim.Suffix = dim.Suffix.replace(StrFind,StrReplace)
    if temp:
       results.append(temp)
       continue
    #Now we need to check each segment for multi segment dimensions
    for seg in dim.Segments:
        #Check each of the Override options for the search value (Above, Below, Prefix, Suffix,ValueOverride)
        if seg.ValueOverride and StrFind in seg.ValueOverride:
            temp.append(seg)
            #Replace with the search criteria (typical)
            seg.ValueOverride = seg.ValueOverride.replace(StrFind,StrReplace)
        if seg.Above and StrFind in seg.Above:
            temp.append(seg)
            seg.Above = seg.Above.replace(StrFind,StrReplace)
        if seg.Below and StrFind in seg.Below:
            temp.append(seg)
            seg.Below = seg.Below.replace(StrFind,StrReplace)
        if seg.Prefix and StrFind in seg.Prefix:
            temp.append(seg)
            seg.Prefix = seg.Prefix.replace(StrFind,StrReplace)
        if seg.Suffix and StrFind in seg.Suffix:
            seg.Suffix = seg.Suffix.replace(StrFind,StrReplace)
    #Check to see if any values were changed with the temp list
    if temp:
        #If the values were changed, append the list of temp elements
        results.append(temp)

TransactionManager.Instance.TransactionTaskDone()

OUT = results
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