<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
<event name="admin_system_config_changed_section_customimport">
    <observer name="update_latest_custom_table" instance="Myfitmix\CustomImport\Observer\Update" />
</event>
</config>