[CutX]

//EDIT: too slow :/

pawn Код:

if(PlayerInfo[playerid][pRank] < 3 && PlayerInfo[playerid][pMember] != 2)
                    {
                        format(string, sizeof(string), "HQ: %s has destroyed a cone.", GetPlayerNameEx(playerid));
                        SendClientMessageEx(playerid, COLOR_BLUE,string);//hereproblem
                    }

[/pawn]

pawn Код:

if(PlayerInfo[playerid][pRank] < 3 && PlayerInfo[playerid][pMember] != 2)
                    {
                        format(string, sizeof(string), "You need to be at least rank 3 to use this command.", GetPlayerNameEx(playerid));
                        SendClientMessageEx(playerid, COLOR_BLUE, string); //hereproblem
                        return 1;
                    }

you forgot the "string" in SendClientMessageEx