Accessing variable with computed name

Hi,

how do I access the contents of a variable (or param) whose name is
computed?

Pseudo-code for demonstration, NOT WORKING:

...
<xsl:param name="table.frame.void">border: none;</xsl:param>
<xsl:param name="table.frame.box">border: 1pt solid black;</xsl:param>
...

<xsl:template match="table">
  <table style="{$table.frame.{@frame}}"> <!-- ### -->
  ...
</xsl:template>


What I intend here is to compute the name of the variable to be accessed
using some constant prefix ('table.frame.') and the contents of the
element's 'frame' attribute.

Nested {...}'s are not allowed, and some other attempts of mine did not
work (like "{concat( '$table.frame.', @frame)}").

Regards, Christian.


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