I changed code like this, and it works now.
$_POST[‘acf’][‘species1’] to $_POST[‘acf’][‘field_xxxxxxxxxxxxx’]
‘field_xxxxxxxxxxxxx’ is name that is defined by ACF itself. My mistake was setting Custom key name instead of field name.
I changed code like this, and it works now.
$_POST[‘acf’][‘species1’] to $_POST[‘acf’][‘field_xxxxxxxxxxxxx’]
‘field_xxxxxxxxxxxxx’ is name that is defined by ACF itself. My mistake was setting Custom key name instead of field name.