how to "print" xsl:element result from inside a functi

Hello,

I have a question concerning getting the output from the recursively called
functions.

In short, I have code:

<xsl:function name="F:TagIT" as="xs:string">
	<xsl:param name="TAG"/>
	<xsl:element name="{$TAG}">MISSING!</xsl:element>
</xsl:function>

<xsl:function name="F:AddMissing" >
	<xsl:param name="List" />
		<xsl:if test="not(empty($List))">
		<xsl:variable name="TAG" select="subsequence($List,1,1)"/>

		<xsl:value-of select="F:TagIT($TAG)"/>

		<xsl:value-of select="F:AddMissing(remove($List,1))"/>
	</xsl:if>
</xsl:function>

And then later I call the function by:

<xsl:value-of select="F:AddMissing(('Test1','t2','tst3'))"/>

It will print MISSING!MISSING!MISSING! - but without the XML tags generated
by xsl:element.

When I debug the program in Altova XML spy and go step by step, I can see
that the correct tag is generated in F:TagIT, but then as the recursion goes
on, it is lost - it seems to me like if the output of the function was
lost... however the word MISSING is printed without problems...

Do you know how to solve this?

Any advice appreciaded.

Thx in advance.