Watch the variation dropdowns and copy the values to a CF7DTE hidden field.
WooCommerce Tips
Shortcode for Contact Form 7 Dynamic Text Extension
CF7DTE is great but sometimes you need a custom shortcode to get product info into the form.
Edit stock levels in WooCommerce
Add editing capability to the List stock levels in WooCommerce plugin
List stock levels in WooCommerce
List the stock numbers for each product and variation.
Notify admin of customer address changes
Email the site admin when a customer changes their billing or shipping address in WooCommerce.
Multiple required fields in WooCommerce
Enhance last year’s code to make multiple WooCommerce product fields required.