`<rowGroup name="ROW_CONT" width="98" totalPosition="End"   headerPosition="Stretch">
                <bucket class="java.lang.Integer">
                    <bucketExpression><![CDATA[0]]></bucketExpression>
                </bucket>
                <crosstabRowHeader>
                    <cellContents backcolor="#F0F8FF" mode="Opaque">
                        <box>
                            <pen lineWidth="0.5" lineStyle="Solid"   lineColor="#000000"/>
                        </box>
                        <textField>
                            <reportElement style="Crosstab Data Text" x="0" y="0" width="98" height="25" uuid="86f9a2b0-ed36-497b-8094-d72fa12037ac"/>
                            <textElement textAlignment="Center" verticalAlignment="Middle">
                                <font size="6"/>
                                <paragraph leftIndent="1" rightIndent="1"/>
                            </textElement>
                            <textFieldExpression><![CDATA[$V{ROW_CONT}]]></textFieldExpression>
                        </textField>
                    </cellContents>
                </crosstabRowHeader>
                <crosstabTotalRowHeader>
                    <cellContents backcolor="#BFE1FF" mode="Opaque">
                        <box>
                            <pen lineWidth="0.5" lineStyle="Solid" lineColor="#000000"/>
                        </box>
                        <staticText>
                            <reportElement x="0" y="0" width="221" height="25" uuid="a2ad1912-4c61-4ed9-9236-26c702927b33"/>
                            <textElement textAlignment="Center" verticalAlignment="Middle">
                                <font size="8" isBold="true"/>
                            </textElement>
                            <text><![CDATA[Firma de Profesores]]></text>
                        </staticText>
                    </cellContents>
                </crosstabTotalRowHeader>
            </rowGroup>`