So, I'm playing as the King of England, former duchy of Normandie . My character had about 7 children but my younger daughter seens fitter for rule than hers siblings . So I used the console to make her older than the others but my heir didn't change . Why?
And before someone says that it's because she's a woman therefore can't inherit my kingdons I've changed the sucession laws to absolute cognatic (again, console to change culture).
P.S: I don't care for cheating I play my game the way I want it.