[Julian12345]

Hello, how can I block symbols like ~ > < § $ ?

Like when I type "/announce This is an ~ example" it should block the announce because it contains a ~
The announce command:

pawn Код:

dcmd_announce(playerid,params[])
{
    if(AccInfo[playerid][Level] >= 3 || IsPlayerAdmin(playerid))
    {
        if(!strlen(params)) return
        SendClientMessage(playerid, LIGHTBLUE2, "Usage: /announce [Text]") &&
        SendClientMessage(playerid, orange, "Function: Will Announce the specified Message in screen");
        SendCommandToAdmins(playerid,"Announce");
        return GameTextForAll(params,4000,3);
    }
    else return ErrorMessages(playerid, 7);
}