<?xml version="1.0" encoding="UTF-8"?>
<form>

    <field name="help" type="help" url="documentation/accessible-media-field-guide" />
    
    <field name="directory" type="text" label="Directory" addonBefore="images/" />

    <field name="preview" label="Preview" type="radio" default="false" layout="joomla.form.field.radio.switcher">
        <option value="false">JNO</option>
        <option value="true">JYES</option>
    </field>

    <field name="preview_width" type="number" label="Preview Width" default="200" showon="preview:true" />

    <field name="preview_height" type="number" label="Preview Height" default="200" showon="preview:true" />

</form>