Unable to add styles to table : Rich Text Editor

Hello Everyone,

I'm using AEM 6.3. In our project we want to add some styles to table in RTE. I followed these directions on how to add styles Configuring the Rich Text Editor , however I have no luck.

This is my editConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    jcr:primaryType="cq:EditConfig">
    <cq:inplaceEditing
        jcr:primaryType="cq:InplaceEditingConfig"
        active="{Boolean}true"
        editorType="text">
        <config jcr:primaryType="nt:unstructured">
            <rtePlugins
                jcr:primaryType="nt:unstructured"
                externalStyleSheets="[/apps/intranet/components/content/text/text.css]">
                <tracklinks
                    jcr:primaryType="nt:unstructured"
                    features="*"/>
                <table
                    jcr:primaryType="nt:unstructured"
                    features="*">
                    <hiddenHeaderConfig
                        jcr:primaryType="nt:unstructured"
                        hiddenHeaderClassName="cq-wcm-foundation-aria-visuallyhidden"/>
                    <tableStyles jcr:primaryType="cq:WidgetCollection">
                        <tablePosition
                            jcr:primaryType="nt:unstructured"
                            cssName="table-position"
                            text="center"/>
                    </tableStyles>
                </table>
                <paraformat jcr:primaryType="nt:unstructured">
                    <formats jcr:primaryType="nt:unstructured">
                        <default_p
                            jcr:primaryType="nt:unstructured"
                            description="Paragraph"
                            tag="p"/>
                        <default_h1
                            jcr:primaryType="nt:unstructured"
                            description="Heading 1"
                            tag="h1"/>
                        <default_h2
                            jcr:primaryType="nt:unstructured"
                            description="Heading 2"
                            tag="h2"/>
                        <default_h3
                            jcr:primaryType="nt:unstructured"
                            description="Heading 3"
                            tag="h3"/>
                        <default_h4
                            jcr:primaryType="nt:unstructured"
                            description="Heading 4"
                            tag="h4"/>
                        <default_h5
                            jcr:primaryType="nt:unstructured"
                            description="Heading 5"
                            tag="h5"/>
                        <default_h6
                            jcr:primaryType="nt:unstructured"
                            description="Heading 6"
                            tag="h6"/>
                        <default_blockquote
                            jcr:primaryType="nt:unstructured"
                            description="Quote"
                            tag="blockquote"/>
                        <default_pre
                            jcr:primaryType="nt:unstructured"
                            description="Preformatted"
                            tag="pre"/>
                    </formats>
                </paraformat>
                <misctools jcr:primaryType="nt:unstructured">
                    <specialCharsConfig jcr:primaryType="nt:unstructured">
                        <chars jcr:primaryType="nt:unstructured">
                            <default_copyright
                                jcr:primaryType="nt:unstructured"
                                entity="&amp;copy;"
                                name="copyright"/>
                            <default_euro
                                jcr:primaryType="nt:unstructured"
                                entity="&amp;euro;"
                                name="euro"/>
                            <default_registered
                                jcr:primaryType="nt:unstructured"
                                entity="&amp;reg;"
                                name="registered"/>
                            <default_trademark
                                jcr:primaryType="nt:unstructured"
                                entity="&amp;trade;"
                                name="trademark"/>
                        </chars>
                    </specialCharsConfig>
                </misctools>
                <links
                    jcr:primaryType="nt:unstructured"
                    features="modifylink,unlink"/>
                <justify
                    jcr:primaryType="nt:unstructured"
                    features="-"/>
                <format
                    jcr:primaryType="nt:unstructured"
                    features="bold,italic"/>
                <image
                    jcr:primaryType="nt:unstructured"
                    features="*"/>
            </rtePlugins>
        </config>
    </cq:inplaceEditing>
</jcr:root>

I couldn't able to see any option in table properties to select the styles. Can anyone tell me what I am doing wrong?