Hi @rktlwm
The ‘post__not_in’ param expects an array or ID’s, not a string, nor an object.
Can you please confirm that the code:
$impact_values = get_sub_field('impact_value_select');
echo '<pre>';
print_r( $impact_values );
echo '</pre>';
die;
Displays only an array of ID’s? Can you please post the result here?
Thanks
E