srfm_additional_restriction_check

/**
* filter source (Free) inc/form-submit.php 
*/
$is_restricted = apply_filters( 'srfm_additional_restriction_check', false, $form_id, $form_data );

/**
* filter source (Free) inc/form-submit.php 
*/
$is_restricted = apply_filters( 'srfm_additional_restriction_check', false, $form_id, $form_data );

add_filter( 'srfm_additional_restriction_check', 'my_callback', 10, 3 ); 
function my_callback( $is_restricted, $form_id, $form_data ) { 
return $is_restricted; 
// return true to block. 
}

add_filter( 'srfm_additional_restriction_check', 'my_callback', 10, 3 ); 
function my_callback( $is_restricted, $form_id, $form_data ) { 
return $is_restricted; 
// return true to block. 
}

add_filter( 'srfm_additional_restriction_check', 'my_callback', 10, 3 ); 
function my_callback( $is_restricted, $form_id, $form_data ) { 
return $is_restricted; 
}

add_filter( 'srfm_additional_restriction_check', 'my_callback', 10, 3 ); 
function my_callback( $is_restricted, $form_id, $form_data ) { 
return $is_restricted; 
}