Cannot insert custom block into 'product.price.final' in XML

Question

Here is my catalog_product_view.xml: I want to insert one CustomBlock to this final price block, so i can use getChildHtml() to call in template final_price.phtml, but it does not work so far, why ?

 <referenceBlock name="product.price.final">
        <block class="Magento\Framework\View\Element\Template" name="custom.block"  template="CustomModule::custom.phtml"/>
    </referenceBlock>

Answer 1

<referenceBlock name="product.info.price">
        <block class="Magento\Framework\View\Element\Template" name="custom.block"  template="CustomModule::custom.phtml" after="product.price.final" />
    </referenceBlock>

Answer 2

Please try using view model for same