Form a Property with values

Hi
I have a number of labels on the page, each with an ID of Label1, Label2, Label3 etc, up to Label20. How do I set up a for loop so that each label can be changed?
For example:

For i = 0 To 20 Label(i).Text = "Example" Next
I need it to change the control ID each time, based on the value of I.
How can I do this?
Thanks
Luke

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