Coupon code in email

I want to show the gift certificate code in the email for customer to copy and paste into order. I used:

Your code: {coupon_code}

but that does not return the code.

Are you referring to send a voucher feature or gift certificate email feature?  If gift certificate email feature, there is no {coupon_code} tag, there is  {voucher} tag which you can configure in the {voucher} text box right under the email body.

My email body is:

TO: {recipient_name}
FROM: {purchaser_first_name} {purchaser_last_name}
DATE: {today_date}
MESSAGE: {recipient_message}

Included is your gift certificate valid towards all products at {siteurl}.
Simply enter the code from your gift certificate in the coupon code entry form during checkout. Enjoy shopping!

Your code:

{voucher}

Thank you,
{store_name} {vouchers} {image_embed}

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But my received email displays:

TO: lvo
FROM: Karen Van Ornum
DATE: Friday, 17 April 2020
MESSAGE: last test

Included is your gift certificate valid towards all products at https://www.xxx.com/.
Simply enter the code from your gift certificate in the coupon code entry form during checkout. Enjoy shopping!

Your code:

{voucher}

Thank you,

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Is it is this section that I need to add something?  What would I add?

Yes. Got it! Thanks again for your help!