Yes, I did.
But what I am trying to express is that there seems to be no correlation between the event number and the success or failure of the campaign.
No matter the code in the DO_EVENT command, END_GAME 14 is a player's failure, END_GAME 17 is a player's success; any other code is a tie.

This is the way I changed the last event in Balkan's save0.tri file (using the original END_GAME 24 gives a tie):

//////////////////////////////////////////////////////////////////////////////
// Event #24
// NATO wins
// Serbian forces pushed back to their borders -> Control ALL of: Zagreb, Zadar, Banja Luka, Split,
//                        Mostar, Tuzla, Osijek, Sarajevo, Bihac, Gornji Vakuf
//////////////////////////////////////////////////////////////////////////////
#IF_CONTROLLED 2 AND 393 330 3788 3422 347 266 2006 2120 289 426
   #PLAY_MOVIE 116
   #DO_EVENT 24
   #END_GAME 17
   #DO_MONOLOG Serbian forces pushed back to their borders -> END GAME
#ENDIF