xsl:fo retrieve-marker not valid child

I need for my xsl:fo transformation an <fo:retrieve-marker> in an table but I don't know if this is possible because I use FOP Processor for my transformation.

If i use the <fo:retrieve-marker> in my table I always get an error message that the tag has to be in an static content.

Here is the table with the marker

                <xsl:call-template name="MMEL-Table-Header"/>

                <!-- Bottom table Line  -->
                <fo:table-footer>
                    <fo:table-row>
                        <fo:table-cell>                                                                             
                            <fo:marker marker-class-name="footer-continued"> <fo:inline>(continued)</fo:inline></fo:marker>
                        </fo:table-cell>
                    </fo:table-row>

                </fo:table-footer>

                <fo:table-body >               

                    <xsl:variable name="identification">
                        <xsl:value-of select="ident/message"/>                                 
                    </xsl:variable>                       
                    <xsl:apply-templates select="ident"><xsl:with-param name="ident" select="$identification"/></xsl:apply-templates>
                    <xsl:apply-templates select="provisos/proviso"><xsl:with-param name="ident" select="$identification"/></xsl:apply-templates>

                <fo:table-row>
                    <fo:table-cell> <fo:retrieve-marker retrieve-position="first-starting-within-page" retrieve-class-name="footer-continued" retrieve-boundary="document" /> </fo:table-cell>
                </fo:table-row>
                </fo:table-body>           
            </fo:table>

(disclosure: I'm a FOP developer)

This example has dynamic table header and table footer, so it should cover your requirements:

if the table fits in a single page, both table header and table footer are empty
if the table is split over several pages
- the table header is empty for the first page, and in the following ones it says "(continued)"
- the table footer is empty for the last page, and in the previous ones it says "(continues on the next page)"
tested with FOP 2.0 (older versions did not support table markers); due to FOP's current limitations, the non-breaking space   in the table header and table footer is a necessary "placeholder" (the header / footer dimensions are computed just once, without marker content)
no formatter-specific extensions, so this could work with other formatters too (XslFormatter supports table markers; XEP has alternative workarounds)

FO fragment:

  <fo:table table-layout="fixed" width="100%">
    <fo:table-column column-width="100%"/>
    <fo:table-header>
      <fo:table-row>
        <fo:table-cell>
          <fo:block>
            <fo:retrieve-table-marker retrieve-class-name="mc1" 
                retrieve-position-within-table="first-starting" 
                retrieve-boundary-within-table="table-fragment"/>
            &#x00A0;
          </fo:block>
        </fo:table-cell>
      </fo:table-row>
    </fo:table-header>
    <fo:table-footer>
      <fo:table-row>
        <fo:table-cell>
          <fo:block>
            <fo:retrieve-table-marker retrieve-class-name="mc2" 
                retrieve-position-within-table="last-ending" 
                retrieve-boundary-within-table="table-fragment"/>
            &#x00A0;
          </fo:block>
        </fo:table-cell>
      </fo:table-row>
    </fo:table-footer>
    <fo:table-body>
      <!-- first row -->
      <fo:table-row>
        <fo:table-cell>
          <fo:block>
            <fo:marker marker-class-name="mc1"></fo:marker>
            <fo:marker marker-class-name="mc2">(continues on the next page)</fo:marker>
            cell1
          </fo:block>
        </fo:table-cell>
      </fo:table-row>
      <!-- middle row -->
      <fo:table-row>
        <fo:table-cell>
          <fo:block>
            <fo:marker marker-class-name="mc1">(continued)</fo:marker>
            <fo:marker marker-class-name="mc2">(continues on the next page)</fo:marker>
            cell2
          </fo:block>
        </fo:table-cell>
      </fo:table-row>
      <!-- ... other similar rows ... -->
      <!-- last row -->
      <fo:table-row>
        <fo:table-cell>
          <fo:block>
            <fo:marker marker-class-name="mc1">(continued)</fo:marker>
            <fo:marker marker-class-name="mc2"></fo:marker>
            cell9
          </fo:block>
        </fo:table-cell>
      </fo:table-row>
    </fo:table-body>
  </fo:table>