[jurialmunkey]

Yeah I know
What I meant is the way these episodes are numbered inside groups is not right.

for example this is Parts (edited version) an episode group of la casa de papel
if you choose "part 4" in TMDb website the episodes are numbered from 1-8
but in TMDb Helper the episodes are S02E09-S02E016, it spouse to be S04E01-S04E08?? right!

Ah right I understand you now.

Unfortunately has to be that way because otherwise the season/episode numbering won't line up with the API. You'd end up with wrong details in other lists (e.g. cast list from a different episode) and players not functioning correctly.

Because of the way info labels work, I can't set a different "display" value but keep the original internal value. The closest I would be able to get is a separate property but that'd need skin support for my nonstandard label. It really needs a separate standardised field in Kodi similar to how "ListItem.Title" has "ListItem.OriginalTitle"