I was checking https://www.thenewsletterplugin.com/developers/dev-newsletter-api and noted that we can pass custom field as part of profile data in add.php of News letter api. My question :
1. I didn’t not see any code to get data for Profile Custom Feild to “Profile” variable in add.php , I am checking it wrong ? or its not there .
2. How can I update custom field Name “CustomFIELD1” with some value using notfication api.
I am able to add subscriber but no Custom field data by below code: