Dynamo python change familysymbol(type) name

@Daniel_Woodcock1 thanks for your reply.

See the script below where i used youre suggestion. but i’m now getting an error

Script with mentioned “ALL_MODEL_TYPE_NAME”

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

clr.AddReference("RevitServices")
import RevitServices
from Autodesk.Revit.DB import FilteredElementCollector, Family
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.ImportExtensions(Revit.Elements)

doc = DocumentManager.Instance.CurrentDBDocument
name = IN[0]
compact = IN[1]
newcentral = IN[2]
isworkshared = IN[3]
elmts = IN[4]
parmNam = IN[5]
val = IN[6]
searcha = IN[7]
renamea = IN[8]

for i in range(len(name)):
	for j in range(len(val[i])):
		Revit.Elements.Element.SetParameterByName(elmts[0], parmNam[i][j], val[i][j])
	
	
	#TransactionManager.Instance.ForceCloseTransaction()
	search=searcha[i]
	rename=renamea[0][i]#[i]
	type_name = []
	collector = FilteredElementCollector(doc).OfClass(Family)
	TransactionManager.Instance.EnsureInTransaction(doc)
	for element in collector.ToElements():
	    for idx, searched in enumerate(search):
	        if searched == element.Name:
	            element.Name = rename[idx]
	            type_name.append(element.Name)
	TransactionManager.Instance.ForceCloseTransaction()
	
	searchb=searcha[i]
	renameb=renamea[0][i]#[i]
	type_namea = []
	type_namecheck = []
	familytypes = FilteredElementCollector(doc).OfClass(FamilySymbol).ToElements()
	
	TransactionManager.Instance.EnsureInTransaction(doc)
	for typ in familytypes:
		typename = typ.get_Parameter(BuiltInParameter.SYMBOL_NAME_PARAM).AsString()
		typename_object = typ.get_Parameter(BuiltInParameter.SYMBOL_NAME_PARAM)
		type_namea.append(typename)
		if searchb[0] == typename:
			type_namecheck.append("gevonden")
			#typeName = typename_object.LookupParameter(searchb[0]).Set(renameb[0])
			typeName = typ.Name(BuiltInParameter.ALL_MODEL_TYPE_NAME_).Set(renameb)
			#typeName = typename.Name(BuiltInParameter.SYMBOL_NAME_PARAM).Set(renameb)
	TransactionManager.Instance.ForceCloseTransaction()
	
	if doc.IsFamilyDocument:
		name[i] += '.rfa'
	else:
		name[i] += '.rvt'
	opt = SaveAsOptions()
	opt.OverwriteExistingFile = True
	opt.Compact = compact
	if isworkshared and newcentral:
		wsopt = WorksharingSaveAsOptions()
		wsopt.ClearTransmitted = True
		wsopt.SaveAsCentral = True
		opt.SetWorksharingOptions(wsopt)
	try:
		doc.SaveAs(name[i], opt)
		OUT = 'ALLE ELEMENTEN ZIJN GEGENEREERD',type_name,searcha,search,renamea,rename,type_namea,familytypes,searchb,renameb,type_namecheck
	except:
		try:
			wsopt.ClearTransmitted = False
			opt.SetWorksharingOptions(wsopt)
			doc.SaveAs(name[i], opt)
			OUT = 'not done',type_name,searcha,search,renamea,rename,type_namea,familytypes,searchb,renameb,type_namecheck
		except:
			OUT = 'not done',type_name,searcha,search,renamea,rename,type_namea,familytypes,searchb,renameb,type_namecheck

thanks in advance