Custom modal in examples not working

[cmnstmntmn]

Hi, hmx is a briliant project!
Congrats to you all.

I'm trying to implement a custom modal,
however the custom modal in the examples is not working.

<div id="modal" _="on closeModal add .closing then wait for animationend then remove me">
	<div class="modal-underlay" _="on click trigger closeModal"></div>
	<div class="modal-content">
		<h1>Modal Dialog</h1>
		This is the modal content.
		You can put anything here, like text, or a form, or an image.
		<br>
		<br>
		<button class="btn danger" _="on click trigger closeModal">Close</button>
	</div>
</div>

what puzzles me is the _="..." attribute that is not doing anything ..
replaced it with hx-trigger still is not triggering anything.

am i missing something?
thank you

[youssame]

I think you need to add the CSS as well.

[cmnstmntmn]

nah, is not that

[MichaelWest22]

This example needs some client side library to do client scripting and in this case uses hyperscript which uses _="" tags to define human readable scripts. Without including a script link to hyperscript in your page header this part of the example will not work.

[cmnstmntmn]

thanks @MichaelWest22 , what was it.