[Konstantinos]

"motd" would need to be a string/array. sscanf is not needed actually for such a case, use isnull and params instead.

pawn Код:

FacInfo[PlayerInfo[playerid][pFac]][facMOTD]

You also need to check that the value of PlayerInfo[playerid][pFac] is in bounds (between 0 and sizeof FacInfo - 1) otherwise run time error 4 will be caused and show the unknown command message.