[L.Hudson]

pawn Код:

if(sscanf(params, "rs[256]", result)) return SendClientMessage(playerid, COLOR_GRAD1, "Usage: (/f)action [team chat]" );

Try changing to

pawn Код:

if(sscanf(params, "s[256]", result)) return SendClientMessage(playerid, COLOR_GRAD1, "Usage: (/f)action [team chat]" );