[TheArcher]

@Niko_boy i didn't know he want PlayerName. Anyways you're doing a little mistake too. As i see you've put PlayerName which you need an array + "u" parameter is used for UserID not for names. so that returns the player ID not its name.
Edit + E.g:

Your example:

pawn Код:

if(sscanf(params,"ui",pname,amount)) return IRC_Say(gGroupID, channel, "02USAGE: !setrob [PlayerName] [AMMOUNT]");

That could return 0 and 1 (0 Player ID and Channel 1)

Mine method could be

pawn Код:

new pname[MAX_PLAYER_NAME];

pawn Код:

GetPlayerName(playerid, pname, sizeof pname);

pawn Код:

if(sscanf(params,"s[24]i",pname,amount)) return IRC_Say(gGroupID, channel, "02USAGE: !setrob [PlayerName] [AMMOUNT]");

That could return Myname and 1 (Player name and channel 1)