Hi with the new secondary sections on Sky UK I need to delete more channels, is it possible to delete via sections? i.e 842 to 852 Sky movie HD channels

I did try

Code:
del sections[842]
for number in customised["video"].keys():
	if number > 852:
		del customised["video"][number]
But I receive a crash

Code:
15:21:14.1388 { D } Traceback (most recent call last):
15:21:14.1389 { D }   File "/usr/lib/enigma2/python/Plugins/SystemPlugins/AutoBouquetsMaker/scanner/main.py", line 517, in doBuildIndex
15:21:14.1392 { D }   File "/usr/lib/enigma2/python/Plugins/SystemPlugins/AutoBouquetsMaker/scanner/manager.py", line 168, in save
15:21:14.1394 { D }   File "/usr/lib/enigma2/python/Plugins/SystemPlugins/AutoBouquetsMaker/scanner/tools.py", line 219, in customMix
15:21:14.1395 { D }   File "<string>", line 108, in <module>
15:21:14.1397 { D } KeyError: 842
15:21:14.1398 [ E ] python/python.cpp:209 call [ePyObject] (PyObject_CallObject(<bound method AutoBouquetsMaker.doBuildIndex of <class 'Plugins.SystemPlugins.AutoBouquetsMaker.scanner.main.AutoBouquetsMaker'>>,()) failed)
Or am I just best deleting them individually via deletes? Thanks