Is there a way to create an array or list of numbers - many numbers, like 100 or 1000 or more?

From the Illinois website it looks as though a Holder is the only way to do this, copy in a Text object for each array/list element.
This method doesn't seem to be the way to store large numbers of values into an array or list.

This may mean also that there are no list accessing means, like to check if a particular value is in a list. 
Thanks for any help,
Randy Latimer