Martin Honnen wrote:

Use 'replace' e.g.
  Airport_Name => replace('\s*$', '')

Wow!

A couple minor tweaks are needed:

\s is more than just the space (x20) character. So, instead of \s I will use a
space.

 When I executed the expression, I got this error message:

FORX0003  The regular expression must not be one that matches a zero-length
string

So, I need to use + instead of *

Here's the updated XPath:

replace(Airport_Name,' +$','')

Thank you Martin!

/Roger