custom fields in the invoice

Hi,
I made a custom field conditioned by choosing a paid option from a free plan.
You may be able to better understand by trying here www.agenda-couture.com/les-packs-agenda/...nnonce-gratuite.html

Tell me how to solve this problem
THANKS

Not sure what you want to display in the invoice? If you want to show the selected value, just use the syntax [NAME_OF_FIELD_IN_UPPERCASE]

If you want to see the value of the fee associated with the field, use the syntax [NAME_OF_FIELD_IN_UPPERCASE_FEE_VALUE]

For example, if the name of the custom field is paid_option, then the tags are:

[PAID_OPTION]
[PAGE_OPTION_FEE_VALUE]

Please try that and let me know if you need more help

Regards,

Tuan