Hi - Can you help?

I am using the XMLMind server to generate a DOCx format file (sample attached).

On the front cover of the document, I wish for the ‘text’ (currently appearing on page 2) to ‘overlay’ on top of the front cover image. 

The definition for that section of the document as I have is like this:

			<fo:page-sequence master-reference="frontcover">
				<fo:flow flow-name="xsl-region-body" font-size="11pt" margin-top="0.3cm" font-family="Calibri">
					<fo:block-container absolute-position="absolute"  top="0cm" left="0cm">
					<fo:block z-index="1">
						<fo:external-graphic z-index="1" content-width="21cm" content-height="29.7cm" src="{data/coverimage}"/>
					</fo:block>
					<fo:block z-index="2" color="black">
						<xsl:value-of select="/data/countrynameucase"/>: <xsl:value-of select="/data/tripname"/>
					</fo:block>
					<fo:block z-index="2" color="black" margin-top="0.7cm" font-family="Calibri" font-size="18pt">
						<xsl:value-of select="/data/leadname"/>
					</fo:block>
					</fo:block-container>
				</fo:flow>
			</fo:page-sequence>


I have attempted many different ways to achieve this - and I was hoping that the x-index property would have worked for me? But it seems to not be doing what it should.

Do you have any suggestions as to what may work?

Thanks
Tim,