[d3ll]

On dialog response, just loop again and use the same if statements used in the command commands or function. IMPORTANT: add a counter for the loop then match them with the listitem.

Ror example:

pawn Код:

COMMAND:mycars(playerid)
{
    new MainStr[ 500 ], iFormat[ 128 ];
    VehicleLoop(v)
    {
        if(VehicleInfo[v][vActive] != 1) continue;
        if(!strcmp(VehicleInfo[v][owner], PlayerName(playerid), false))
        {
            format(iFormat, sizeof, "ID: [%d]\n", v);
            strcat(MainStr, iFormat);
        }
    }
    ShowPlayerDialog(playerid, MY_CARS, DIALOG_STYLE_LIST, "Vehicles owned by you!", MainStr, "Select", "");
    return 1;
}
public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(listitem == MY_CARS)
    {
        if(response)
        {
            new count, finalid;
            VehicleLoop(v)
            {
                if(VehicleInfo[v][vActive] != 1) continue;
                if(!strcmp(VehicleInfo[v][owner], PlayerName(playerid), false))
                {
                    if(count == listitem)
                    {
                        finalid = v;
                    }
                    count++;
                }
            }
            format(iFormat, sizeof(iFormat), "Congratulations my prince, you own ID: %d", finalid);
            ShowPlayerDialog(playerid, MY_CARS, DIALOG_STYLE_MSGBOX, "Wow, mr big time.", iFormat, "Select", "");   
        }
    }
}