amp-script

Hello!
Can you help me with amp-script element, please?
I tried to include form on AMP pages with new amp component – amp script. https://amp.dev/documentation/components/amp-script/

I put element into the header section – https://yadi.sk/d/_TbX9ql7HfLTyQ. And try to call form with this code in amp page
<amp-script src=”http://**amp-iframe.js&#8221; width=300 height=100>
<div class=”ml-form-embed”
data-account=”124″
data-form=”137″>
</div>
</amp-script>

But is doesn’t work. What I do wrong?
Thank you!