[iPLEOMAX]

If everything else you have done is correct, then the problem is possibly here:

ShowPlayerDialog(playerid, 2008, 2, "Class Changer", string, "Accept", "Cancel");
Maybe it's interfering with other dialog ids.

Try this:

pawn Код:

// On top of your script:
#define DIALOG_CLASS_CHANGER 1245
//1245 or any random number

//In your code: 
ShowPlayerDialog(playerid, DIALOG_CLASS_CHANGER , 2, "Class Changer", string, "Accept", "Cancel");

//In OnDialogResponse:
case DIALOG_CLASS_CHANGER: {
// Your things here..
}