Plain text to odt with dynamic elements - libreoffice

Question

I am trying to figure out a way to create odt files with dynamic elements from a plain text file and avoid using any kind of scripts. While doing some testing, I can easily convert an odt file to plain text using libre office command line tool. However, when trying to convert from plain text to odt format, dynamic elements are lost. I searched the documentation but nothing specifies the expected format when converting.
I tried using the command libreoffice --convert-to odt sampleFile.txt but dynamic elements are not recognized.
Considering the following .txt file that contains
${Parent.child}
Can I convert it to a working .odt file ?
UPDATE:
I was able to do so using the XML format but it is not the desired way of doing this because the XML format requires/generate a lot of elements.
Sample file:
<?xml version="1.0" encoding="UTF-8"?>
<office:document xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:rpt="http://openoffice.org/2005/report" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:css3t="http://www.w3.org/TR/css3-text/" office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.text">
<office:meta><meta:document-statistic meta:character-count="108" meta:image-count="0" meta:object-count="0" meta:page-count="1" meta:paragraph-count="5" meta:table-count="0" meta:word-count="5"/><dc:date>2021-09-02T10:44:35</dc:date><meta:editing-duration>PT00H00M00S</meta:editing-duration><meta:editing-cycles>1</meta:editing-cycles><meta:generator>LibreOffice/6.0.7.3$Linux_X86_64 LibreOffice_project/00m0$Build-3</meta:generator></office:meta>
<office:settings>
<config:config-item-set config:name="ooo:view-settings">
<config:config-item config:name="ViewAreaTop" config:type="long">0</config:config-item>
<config:config-item config:name="ViewAreaLeft" config:type="long">0</config:config-item>
<config:config-item config:name="ViewAreaWidth" config:type="long">0</config:config-item>
<config:config-item config:name="ViewAreaHeight" config:type="long">0</config:config-item>
<config:config-item config:name="ShowRedlineChanges" config:type="boolean">true</config:config-item>
<config:config-item config:name="InBrowseMode" config:type="boolean">false</config:config-item>
</config:config-item-set>
<config:config-item-set config:name="ooo:configuration-settings">
<config:config-item config:name="PrintPaperFromSetup" config:type="boolean">false</config:config-item>
<config:config-item config:name="PrintFaxName" config:type="string"/>
<config:config-item config:name="PrintSingleJobs" config:type="boolean">false</config:config-item>
<config:config-item config:name="PrintProspectRTL" config:type="boolean">false</config:config-item>
<config:config-item config:name="PrintProspect" config:type="boolean">false</config:config-item>
<!-- ... and more -->
</config:config-item-set>
</office:settings>
<office:scripts>
<office:script script:language="ooo:Basic">
<ooo:libraries xmlns:ooo="http://openoffice.org/2004/office" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</office:script>
</office:scripts>
<!-- ... truncated styles -->
<office:body>
<office:text>
<text:sequence-decls>
<text:sequence-decl text:display-outline-level="0" text:name="Illustration"/>
<text:sequence-decl text:display-outline-level="0" text:name="Table"/>
<text:sequence-decl text:display-outline-level="0" text:name="Text"/>
<text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
</text:sequence-decls>
<text:p text:style-name="Standard"><text:text-input text:description="jooscript">${Parent.child}</text:text-input></text:p>
</office:text>
</office:body>
</office:document>