[Voldemort]

1. error

pawn Код:

new text[64],string[50];
storedforcedmode = string[64];

2. if you are going to use storedforcedmode as text you will need it storedforcedmode[64];

And use
strmid(storedforcedmode,string,0,strlen(string),25 5);
not
storedforcedmode = string[64];
because we not talking about integers

whole edit:

pawn Код:

forward forcedtochange(playerid);
new storedforcedmode[50];

COMMAND:forcemode(playerid, params[])
{
    if (PlayerInfo[playerid][pAdminLevel] >=3)
    {
        new text[40],string[50];
        if (sscanf(params, "s[64]",text))
        {
            SendClientMessage(playerid, COLOR_GOLD, "Usage: /forcemode <modename>"); return 1;
        }
        format(string, sizeof(string), "changemode %s",text);
        strmid(storedforcedmode,string,0,strlen(string),255);
        SetTimer("forcedtochange", 535000,0);
    }
    return 1;
}
public forcedtochange(playerid)
{
    SendRconCommand(storedforcedmode);
    return 1;
}