Well, changing the name worked....but why I don`t understand :hmmm:
Anyway, I have completed this lesson.
The changed settlement and region name
The new region Attiki and the settlement of Athens
A few new buildings and resources
Changed faction_creator line and new troops in the city.
Konstantinos, the youngest son of emperor Alexius.
I have edited the descr_strat.txt file a lot of times, so I hope I is not a problem i put the settlement right away under byzantine control.
EDIT: So to change the name of a settlement, i have to edit the descr_strat.txt, imperial_campaign_regions_and_settlement_names.txt and descr_regions.txt files right?