As the POD for AppConfig states, the ${var} syntax will expand an environment variable. To expand a variable set in your file, you need to use the $(var) or $var syntax. If you can change your file syntax, you can use this module. If you can't change your file syntax, you can probably hack the module source code to do what you want, or you can pre-process the file to delete {}.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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