Nusoap in Code Igniter 1.5.4

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Having some trouble, It's not running the function selectMemberInfo($member_id) within select_member_info function. I know this because I put echo 'here';die; statement. Below never shows here when access WS directly, hence it doesn't even get to load the model:

Code:

function select_member_info() {
    
        function selectMemberInfo($member_id) {
            $CI =& get_instance();
echo 'here';die;
            $CI->load->model("Member");
            
            $CI->Member->_id = $member_id;
                        
            $row = $CI->Member->selectMemberInfo(); // the method we use to retrieve member's info as array
    
            return $row;
        }
        
        $this->nusoap_server->service(file_get_contents("php://input"));
    }

but this does

Code:

function select_member_info() {
echo 'here';die;
        function selectMemberInfo($member_id) {
            $CI =& get_instance();
            
            $CI->load->model("Member");
            
            $CI->Member->_id = $member_id;
                        
            $row = $CI->Member->selectMemberInfo(); // the method we use to retrieve member's info as array
    
            return $row;
        }
        
        $this->nusoap_server->service(file_get_contents("php://input"));
    }

not sure why. Any help would be greatly appreciated. Thanks in advance. This is good stuff by the way. Thanks.