Editing gender of pawns over the savefile

[n0m4an]

Hi guys,

can anyone of tell me, how I change the gender in the savefile of one my new colonists?
I had search for their name over the nick properties f.ex. "<nick>Sissy" and change all gender properties I found and also the <title> properties.
If reload the game or load the game, the pawn is still a male, I tried to change him in to a female.
I of course checked by name and Fraction that I change only the pawn I want, but what do I miss?