LBound() and UBound() apply to arrays.
Arrays are used in code.
They are not very useful in expressions in text boxes or query fields.
There's a practical example of using UBound() in code here:
http://allenbrowne.com/func-10.html
The code parses a phrase into an array of words, and loops through the array
to return the n-th word.

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Allen Browne - Microsoft MVP. Perth, Western Australia
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> How do you use Ubound and Lbound in the Expression Builder? If possible
> can
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> Cage