Programming Guide : 6. Working with Arrays, Table Fields, and Collections : Collections : How You Can Index into an Undeclared Collection
 
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How You Can Index into an Undeclared Collection
The following code shows how to index into a collection when the collection has not been defined to OpenROAD as a collection:
initialize()=
declare
        app = application;
        wbs = workbooks;
        x = integer;
        y = varchar(20);
        awbs = array of workbook;
enddeclare
begin

//      Show Microsoft Excel
        app.visible = 1;

//      Get the workbooks collection
        wbs = app.workbooks();
//      Open a workbook and put it into an OpenROAD
//      array
        awbs[1] = wbs.open
                ('c:\msoffice\excel\examples\samples.xls');

//      Index into the OpenROAD array to access a workbook
//      and set an attribute.
        awbs[1].author = 'John Smith';
//      Index into the workbooks collection through an integer
//      constant and set an attribute of the workbook
//      being indexed.
        Wbs.item(1).author = 'Jane Smith';
//      Index into the workbooks collection through a string
//      constant and set an attribute of the workbook
//      being indexed.
        wbs.item('samples.xls').author = 'Sam';
//      Index into the workbooks collection through a varchar
//      variable and set an attribute of the workbook
//      being indexed.
        x = 1;
        wbs.item(x).author = 'Sally';
//      Index into the workbooks collection through an integer
//      variable and set an attribute of the workbook
//      being indexed.
        y = 'samples.xls';
        wbs.item(y).author = 'unknown';

//      Index into the workbooks collection through a string
//      constant and call a method of the workbook being
//      indexed.
        wbs.item('samples.xls').close(TRUE,'c:\save.xls',FALSE);

//      Quit Excel.
        app.quit();
end