Nutch additional fields for indexing in solr

Question

I am using nutch 1.19 and solr 8.11.2. For additional field crawling like h1, h2 and h3 I added new fields in /plugins/indexer-solr/schema.xml:

            <field name="h1" type="string" stored="true" indexed="true" multiValued="true"/>
        <field name="h2" type="string" stored="true" indexed="true" multiValued="true"/>
        <field name="h3" type="string" stored="true" indexed="true" multiValued="true"/>

        
    </fields>
    ...
    ...


<copyField source="h1" dest="text"/>
<copyField source="h2" dest="text"/>
<copyField source="h3" dest="text"/>

After starting the crawling process, nutch runs but with no effect to the solr database. Does anyone know whats wrong?