Can't change COLON_RANK value?

Well I implemented COLON_RANK into SkinMetaData.slk, put the .slk in a local UI folder and my World Edit now shows a field in Game interface where I can cange "Rank:" (which it shows by default) to whatever I want.

HOWEVER:
It doesn't work in-game :o
Instead, it shows GLOBALSTR_161 where there used to be "Rank:"

When browsing the map's MPQ, I came across this:

Hidden information: Code: //war3mapSkin.txt [FrameDef] COLON_SPELLS=TRIGSTR_087 COLON_NAME=TRIGSTR_089 CASTER_UPGRADE_TIP=TRIGSTR_086 UPGRADE_TOOLTIP=TRIGSTR_052 COLON_UPGRADE=TRIGSTR_088 COLON_ARMOR=TRIGSTR_160 ARMOR_NONE=TRIGSTR_102 ARMORTIP_NONE=TRIGSTR_162 COLON_RANK=TRIGSTR_161

And TRIGSTR_161 in war3map.wts is indeed "Stats:" as I want it to be:

Hidden information: Code: ... STRING 160 { Mitigation: } STRING 161 { Stats: } ...

As you can see, 160 is "Mitigation:", which I used to replace "Armor:" with and which DOES work in-game (Since COLON_ARMOR is a default Game Interface field?)


Now: why does it accept stuff like COLON_ARMOR changes, but doesn't it accept me to change COLON_RANK, even though I enabled Game Interface to show the field and set that field to "Stats:"?



EDIT: Somehow editing the .SLK row of COLON_RANK to set stringExt to 0 made it work