[xsl] replace lower to upper

[Douglas Wade <douglaswade@xxxxxxxxx>]

I am using the replace function, I would like to get value of the
attribute to be all caps and changed. There still is a lowercase 'b'
in the results. How should I change things to get it right.


Source:

<graphic boardno="rq4-b-271101-520-0002">

Transform:
<xsl:value-of select="replace( .,'RQ4-(.)-','RQ4N-A$1-','i')"/>

Bad Results:
<graphic boardno="RQ4N-Ab-271101-520-0002"/>

Desired Results:
<graphic boardno="RQ4N-AB-271101-520-0002"/>