[FuNkYTheGreat]

Oops i missed brackets,

Код:

public OnPlayerCommandReceived(playerid, cmdtext[])
{
	if(AccInfo[playerid][JailTime] != 0)
	{
        SendClientMessageEx(playerid,-1, "You can't use any command while in jail");
	return 0;
        }
        return 1;
}

Try this !