GraphicsStyle Revit API

import clr
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument

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

clr.AddReference("DSCoreNodes")
import DSCore
clr.ImportExtensions(DSCore)
from DSCore import *

lineStyles = doc.Settings.Categories.get_Item(BuiltInCategory.OST_Lines).SubCategories

for style in lineStyles: # поиск стиля по имени
    if style.Name == 'Линии':
        myStyle = style

lines = UnwrapElement(IN[0])

TransactionManager.Instance.TransactionTaskDone()

for line in lines: # присваивание стиля линиям
    line.LineStyle = myStyle # >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Not working <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

TransactionManager.Instance.EnsureInTransaction(doc)

OUT = 1