[biker122]

pawn Код:

if(count) ShowPlayerDialog(playerid, 5559, DIALOG_STYLE_MSGBOX, "Online administrator", string, "Close", "");

If the count is 1, then show the dialog? Seriously.
strcat isn't really important over there, you can just format the string and show the show if the count is > 0.

EDIT: Lol, you even edited your old code (which was incorrect)