[Jafet_Macario]

For first command:

pawn Код:

YCMD:buyhouse(playerid, o[], help)
{
    if(help) return SendClientMessage(playerid, -1, "Buyhouse help");
    if(!isnull(o)) return 0;
    if(HouseOwner[playerid] == true) return SendClientMessage(playerid, 0xE21F1FFF, "You already own a house.");
    if(IsSettingUpHouse[playerid] == true ) return SendClientMessage(playerid, 0xE21F1FFF, "You are already setting up your house.");
    ShowPlayerDialog(playerid, 666, DIALOG_STYLE_MSGBOX, "Confirmation", "You are about to create your very own house.\n\nPress 'Continue' to start.", "Continue", "Cancel");
    return true;
}

Or you can:

pawn Код:

YCMD:buyhouse(playerid, o[], help)
{
    #pragma unused o, help
    if(HouseOwner[playerid] == true) return SendClientMessage(playerid, 0xE21F1FFF, "You already own a house.");
    if(IsSettingUpHouse[playerid] == true ) return SendClientMessage(playerid, 0xE21F1FFF, "You are already setting up your house.");
    ShowPlayerDialog(playerid, 666, DIALOG_STYLE_MSGBOX, "Confirmation", "You are about to create your very own house.\n\nPress 'Continue' to start.", "Continue", "Cancel");
    return true;
}