[AndySedeyn]

When you make a dialog you can either give it a name or a number(dialogid).

If you give it a name you'll have to define it ontop of your script with this:

pawn Код:

#define DIALOG_NAME 1777 //The name in this case is DIALOG_NAME and the dialogid is 1777 both can be changed

pawn Код:

ShowPlayerDialog(playerid, DIALOG_NAME, DIALOG_STYLE_MSGBOX, "Hi", "Look at your dialog", "Close", "");

Replace dialogid with the name.

If you use a number, just replace dialogid with the number you want.

pawn Код:

ShowPlayerDialog(playerid, 1777, DIALOG_STYLE_MSGBOX, "Hi", "Look at your dialog", "Close", "");

I recommend you to read these wiki pages about dialogs.
https://sampwiki.blast.hk/wiki/ShowPlayerDialog
https://sampwiki.blast.hk/wiki/OnDialogResponse
https://sampwiki.blast.hk/wiki/Dialog_Styles