Adding a Line of text for order number

I’ve added a text line, this is for customers to input their order number and is required.
I input everything per the form and I hit submit.
emails shows up with everything EXCEPT the line of text for the order number.
everythign else works fine

here’s is my form:

<label> Your Name (required)
    [text* your-name] </label>

<label> Your Email (required)
    [email* your-email] </label>

<label> Subject
    [text your-subject] </label>

<label>Your order Number(Required)
[text* order-id placeholder "Order Number"] </label>

<label> Your Message
    [textarea your-message] </label>

[captchac captcha-529] [captchar captcha-529]

[submit "Send"]