Calling function from Bpl

This is my Bpl:

unit GlobalUnit;


interface
uses ExtCtrls, Buttons;
//procedure vcPanelResize(Sender: TObject);

implementation

procedure vcPanelResize(Panel:TPanel);
var
  i,m,n:integer;
begin
  m:=1; n:=1;
  for i:=0 to Panel.ControlCount-1 do
    begin
      if Panel.Controls[i].ClassType=TBitBtn then
        begin
          with Panel.Controls[i] as TBitBtn do
            begin
              Top:=m;
              Left:=n;
              Width:=Panel.Width-2;
              m:=m+Height+1;
            end;
        end;
    end;
end;

exports
vcPanelResize name 'vcPanelResize';

end.

How can I call procedure vcPanelResize from my main program.