[Chenko]

Alrighty, this is what you need to do :

PHP код:

CMD:selldrugs(playerid, params[])
{
    new pName[24], string[200];
    
    if(sscanf(params, "ui", iId, iAmount))
        return SendClientMessage(playerid, DEEPPINK, "USAGE: /selldrugs <id> <amount>");
        
    if(!IsPlayerConnected(iId))
        return SendClientMessage(playerid, DEEPPINK, "ERROR: Player is not connected");
        
    if(PlayerInfo[playerid][pDrugs] = 0)
        return SendClientMessage(playerid, DEEPPINK, "ERROR: You don't have any drugs to sell");
    if(playerid == iId)
        return SendClientMessage(playerid, DEEPPINK, "ERROR: You can't sell drugs to yourself");
        
    if (GetPlayerMoney(playerid) < iAmount)
        return SendClientMessage(playerid, DEEPPINK, "ERROR: Insufficent funds");
        
    {
        GetPlayerName(playerid, pName, sizeof pName);
        format(string, sizeof(string), ""COL_RED"\t\tDrug Sellers\n\n"COL_RED"%s "COL_WHITE"wants to sell you a drug for "COL_RED"%d "COL_WHITE"amount\nDo you want to you buy one?", pName, iAmount);
        SetPVarInt(playerid, "iAmount", iAmount); //This basically saves a player variable onto that playerid with the names iAmount and iId 
        SetPVarInt(playerid, "iId", iId); // The middle option doesnt have to be the same as the variable you are storing
        ShowPlayerDialog(iId, DIALOG_SELLDRUGS, DIALOG_STYLE_MSGBOX, ""COL_WHITE"Drug Sellers", string, "Yes", "No");
    }
    return 1;
}
//Now onto OnPlayerDialogResponse. 
case DIALOG_SELLDRUGS:
        {
            if(!response)
            {
                return 1;
            }
            if(response)
            {
                new iAmount, iId; 
                iAmount = GetPVarInt(playerid, "iAmount"); 
                iId = GetPVarInt(playerid, "iId"); //Now we are simply getting the player variables which we stored in the command. 
                DeletePVar(playerid, "iAmount");
                DeletePVar(playerid, "iId"); //Just deleting the player variables since we are no longer using them. 
                
                PlayerInfo[playerid][pDrugs]--;
                PlayerInfo[iId][pDrugs]++;
                GivePlayerMoney(playerid, iAmount);
                GivePlayerMoney(iId, - iAmount);
            }
            return 1;
        } 


It's very easy once you understand how it works.