[Konstantinos]

Your code checks if the dialogid is equal to SHOP_DIALOG and then you use switch on dialogid and you say, if the dialogid is 0 then show the dialog SHOP_SKIN.

I guess you mean list item:

pawn Код:

if (dialogid == SHOP_DIALOG)
{
    if (response)
    {
        if (!listitem) ShowPlayerDialog(playerid, SHOP_SKIN, DIALOG_STYLE_INPUT, "Enter a valid Skin ID.", "",  "OK", "Cancel");
    }
    return 1;
}
else if (dialogid == SHOP_SKIN)
{
    if (response)
    {
        SetPlayerSkin(playerid, strval(inputtext));
        GivePlayerMoney(playerid, -5000);
    }
    return 1;
}

However, using switch is faster and it's recommended:

pawn Код:

switch (dialogid)
{
    case SHOP_DIALOG:
    {
        if (response)
        {
            if (!listitem) ShowPlayerDialog(playerid, SHOP_SKIN, DIALOG_STYLE_INPUT, "Enter a valid Skin ID.", "",  "OK", "Cancel");
        }
        return 1;
    }
    case SHOP_SKIN:
    {
        if (response)
        {
            SetPlayerSkin(playerid, strval(inputtext));
            GivePlayerMoney(playerid, -5000);
        }
        return 1;
    }
}

If you don't use DIALOG_STYLE_LIST in SHOP_DIALOG dialog, then listitem will be -1 so you will need to change:

pawn Код:

if (!listitem) ShowPlayerDialog(playerid, SHOP_SKIN, DIALOG_STYLE_INPUT, "Enter a valid Skin ID.", "",  "OK", "Cancel");

to:

pawn Код:

ShowPlayerDialog(playerid, SHOP_SKIN, DIALOG_STYLE_INPUT, "Enter a valid Skin ID.", "",  "OK", "Cancel");