It would work the same say, but you’ll need to convert the value returned from the other plugins textarea to an array of choices. This is a basic example of the code you’d use in the load field filter:
$values = get_value_from_kirki_toolkit(); // get the text value
$values = explode(',', $values); // split the string into an array
$values = array_map('trim', $values); // trim all the values
foreach ($values as $value) {
$field['choices'][$value] = $value;
}
return $field;
