H1 in Zero App Field Text VALUE

Hello.
I'm using Zero App on my website.
I placed a Field Text that serves as the page title for my posts.
Whenever I do an SEO analysis I am alerted to the fact that I do not have H1 tags on my pages.
Field Text only allows you to put H1 in the Label and not in the Value.
How do I make the Field Text Value H1?

On the website pages, the css generated for this Field Text is:

#item-1683539381389 .ba-field-content {
color: var(--title);
background-image: none;
font-family: 'Montserrat';
font-size: 50px;
font-style: normal;
font-weight: 700;
letter-spacing: 0px;
line-height: 46px;
text-decoration: none;
text-align: left;
text-transform: none;
}

How to "make" this #Item H1 and put this in the custom code?
Thank you.
Nuno

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