Why the button doesn't working on a UI Component Admin Form?

Question

I'm trying to create a Button Field on a UI Component Admin Form but it looks like it's not calling the Controller. It doesn't call the custom controller,But it works when i call the defaults of Magento (save, delete, back, reset), why?.

What could it be?

Button field code

<button name="delete_header">
    <argument name="data" xsi:type="array">
        <item name="config" xsi:type="array">
            <item name="buttonClasses" xsi:type="string">custom-button-class</item>
            <item name="actions" xsi:type="array">
                <item name="0" xsi:type="array">
                    <item name="targetName" xsi:type="string">api_data_form.api_data_form_data_source</item>
                    <item name="actionName" xsi:type="string">api/data/deleteheader</item>
                </item>
            </item>
        </item>
    </argument>
    <settings>
        <displayAsLink>false</displayAsLink>
        <title translate="true">Delete Selected Header</title>
    </settings>
</button>

Answer 1

This Works Fine ...Try This Out..

 <item name="buttons" xsi:type="array">
            <item name="add" xsi:type="array">
                <item name="name" xsi:type="string">add</item>
                <item name="label" xsi:type="string" translate="true">Add New</item>
                <item name="class" xsi:type="string">primary</item>
                <item name="url" xsi:type="string">*/*/edit</item>
            </item>
        </item>

Answer 2

Try this

<button name="add_address" component="Magento_Customer/js/address/default-address">
    <argument name="data" xsi:type="array">
        <item name="config" xsi:type="array">
            <item name="formElement" xsi:type="string">container</item>
            <item name="buttonClasses" xsi:type="string">add-new-address-button</item>
            <item name="actions" xsi:type="array">
                <item name="0" xsi:type="array">
                    <item name="targetName" xsi:type="string">${ $.parentName}.customer_address_update_modal.update_customer_address_form_loader</item>
                    <item name="actionName" xsi:type="string">destroyInserted</item>
                </item>
                <item name="1" xsi:type="array">
                    <item name="targetName" xsi:type="string">${ $.parentName}.customer_address_update_modal</item>
                    <item name="actionName" xsi:type="string">openModal</item>
                </item>
                <item name="2" xsi:type="array">
                    <item name="targetName" xsi:type="string">${ $.parentName}.customer_address_update_modal.update_customer_address_form_loader</item>
                    <item name="actionName" xsi:type="string">render</item>
                </item>
            </item>
        </item>
    </argument>
    <settings>
        <title translate="true">Add New Address</title>
        <imports>
            <link name="parentId">${ $.provider}:data.customer_id</link>
        </imports>
    </settings>
</button>

Reference Path: magentoRoot/vendor/magento/module-customer/view/base/ui_component/customer_form.xml