Goto your engine settings and all the way at the bottom there will be a text box that says Game.ini out your code there, do a restart, and it should work
If that dont work^ its because your ini file is too complicated for nitrado to "stack the code" properly and you will have to put it directly into game ini. In expertsetting (not gameusersetting) and if it still dont work the file will need to be "re-stacked" using notepad ++ then droped into game ini.