9 picture problem

[dangerduck]

sory for double post but i try like that
i gave image picture like that
Skica1
Skica2 ......
then i write code like that

Delphi-Quellcode:

procedure TForm17.Timer1Timer(Sender: TObject);
type
skica=timage;
begin
skica+random(9).show=true
end;

But it wont work