[Dragonsaurus]

I still see some minor mistakes:

pawn Код:

GetPlayerName(otherid, names, sizeof(namez)); // Name is assigned to "names" and sizeof is taken from "namez"...

format(string, sizeof(string), "%s gave you $%d", cash, namez); // "%s" assigned for cash and "$%d" assigned to the name...

Dusk and AaronKillz already gave you a solution, but here is the final code:

pawn Код:

CMD:pay(playerid, params[]) 
{ 
    new otherid, cash, string[128], namez[MAX_PLAYER_NAME], names[MAX_PLAYER_NAME]; 

    if (sscanf(params, "dd", otherid, cash)) SendClientMessage(playerid, COLOR_RED, "Usage: /pay [ID] [Cash]"); 

    if(!IsPlayerConnected(otherid)) return SendClientMessage(playerid, COLOR_RED, "That PlayerID is not connected!");   
    if(otherid == playerid) return SendClientMessage(playerid, COLOR_RED, "It is pointless to pay yourself.."); 
    if(GetPlayerMoney(playerid) < cash) return SendClientMessage(playerid, COLOR_RED, "You don't have that much!"); 

    GivePlayerMoney(playerid, -cash); 
    GetPlayerName(otherid, names, sizeof(names)); 
    format(string, sizeof(string), "You gave $%d to %s", cash, names); 
    SendClientMessage(playerid, COLOR_BLUE, string);  

    GivePlayerMoney(otherid, cash); 
    GetPlayerName(playerid, namez, sizeof(namez)); 
    format(string, sizeof(string), "%s gave you $%d", namez, cash); 
    SendClientMessage(otherid, COLOR_BLUE, string);
    return 1; 
}