[kovac]

I would recommend you this include for creating dialogs much simpler: https://sampforum.blast.hk/showthread.php?tid=475838
Also, checking for client-side money is a very bad idea, use server-sided. Else It can be easily hacked.

However, this should work:

PHP код:

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    switch(dialogid)
    {
        case 1: // DIALOG ID. IT'S BETTER TO USE DEFINES IF YOU DON'T USE EASYDIALOG
        {
            if(response)
            {
                if(GetPlayerMoney(playerid) < 1000) return SendClientMessage(playerid, -1, "ERROR: You don't have enough cash.");
                switch(lisitem)
                {
                    case 0: // Listitem 1
                    {
                        // ..
                    }
                    case 1: // Listitem 2
                    {
                        // ..
                    }
                }
            }
            
        }
        return 1; // We handled a dialog, so return 1.
    }
    return 0; // You MUST return 0 here!
}