format-number() doesn't work

[mvasicek]

Hello,

I am using XalanTransformer - transform() method. If I specify in an XSL the following:

<xsl:value-of select="format-number($UID, '0000')" />

or

<xsl:value-of select="format-number(3, '0000')" />

the formatting doesn't work. I can see only one digit as a result. Do I use something wrong?

Thanks in advance, Miro.