diff --git a/src/api/endpoints/class-tainacan-rest-exporters-controller.php b/src/api/endpoints/class-tainacan-rest-exporters-controller.php
index 3e93d9f2f..4f15396a6 100644
--- a/src/api/endpoints/class-tainacan-rest-exporters-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-exporters-controller.php
@@ -5,6 +5,7 @@ namespace Tainacan\API\EndPoints;
 use \Tainacan\API\REST_Controller;
 use Tainacan\Repositories;
 use Tainacan\Entities;
+use \Tainacan\Exposers\Mappers\Value;
 
 /**
  * Represents the Exporters REST Controller
@@ -36,6 +37,14 @@ class REST_Exporters_Controller extends REST_Controller {
 				'permission_callback' => array($this, 'export_permissions_check'),
 			),
 		));
+		
+		register_rest_route($this->namespace, '/' . $this->rest_base . '/teste', array(
+			array(
+				'methods'             => \WP_REST_Server::READABLE,
+				'callback'            => array($this, 'teste'),
+				'permission_callback' => array($this, 'export_permissions_check'),
+			),
+		));
 
 		register_rest_route($this->namespace, '/' . $this->rest_base . '/session', array(
 			array(
@@ -213,6 +222,79 @@ class REST_Exporters_Controller extends REST_Controller {
 		];
 		return new \WP_REST_Response( $response, 200 );
 	}
+	
+	protected function map($item_arr, $mapper) {
+		$ret = $item_arr;
+		if(array_key_exists('metadatum', $item_arr)) { // getting a unique metadatum
+			$ret = $this->map_metadatum($item_arr, $mapper);
+		} else { // array of elements
+			$ret = [];
+			foreach ($item_arr as $item) {
+				if(array_key_exists('metadatum', $item)) {
+					$ret = array_merge($ret, $this->map($item, $mapper) );
+				} else {
+					$ret[] = $this->map($item, $mapper);
+				}
+			}
+		}
+		return $ret;
+	}
+
+	protected function map_metadatum($item_arr, $mapper) {
+		$ret = $item_arr;
+		$metadatum_mapping = $item_arr['metadatum']['exposer_mapping'];
+		if(array_key_exists($mapper->slug, $metadatum_mapping)) {
+			if(
+					is_string($metadatum_mapping[$mapper->slug]) && is_array($mapper->metadata) && !array_key_exists( $metadatum_mapping[$mapper->slug], $mapper->metadata) ||
+					is_array($metadatum_mapping[$mapper->slug]) && $mapper->allow_extra_metadata != true
+			) {
+				throw new \Exception('Invalid Mapper Option');
+			}
+			$slug = '';
+			if(is_string($metadatum_mapping[$mapper->slug])) {
+				$slug = $metadatum_mapping[$mapper->slug];
+			} else {
+				$slug = $metadatum_mapping[$mapper->slug]['slug'];
+			}
+			$ret = [$mapper->prefix.$slug.$mapper->sufix => $item_arr['value']]; //TODO Validate option
+		} elseif($mapper->slug == 'value') {
+			$ret = [$item_arr['metadatum']['name'] => $item_arr['value']];
+		} else {
+			$ret = [];
+		}
+		return $ret;
+	}
+	
+	public function teste() {
+		$filters = [
+			'posts_per_page' => 1,
+			'paged'   => $index+1,
+			'order'   => 'DESC'
+		];
+		$tainacan_items = \Tainacan\Repositories\Items::get_instance();
+		$items = $tainacan_items->fetch($filters, 6, 'WP_Query');
+		
+		$export_items = "";
+		if ($items->have_posts()) {
+			$items->the_post();
+			$item = new Entities\Item($items->post);
+			$items_metadata = $item->get_metadata();
+			$prepared_item = [];
+			foreach ($items_metadata as $item_metadata) {
+				array_push($prepared_item, $item_metadata->_toArray());
+				//array_push($prepared_item, $item_metadata);
+			}
+			
+			$mapper = 'Tainacan\\Exposers\\Mappers\\Value';
+			$instance_mapper = new $mapper();
+			//$instance_mapper = new Tainacan\Exposers\Mappers\Value;
+			//$instance_mapper = new \Tainacan\Exposers\Mappers\Value();
+			
+			$response = $this->map($prepared_item, $instance_mapper); 
+			//$response = $this->map($prepared_item, ['slug' => 'value']); 
+			return new \WP_REST_Response( $response, 200 );
+		}
+	}
 
 }
 
diff --git a/src/exporter/class-tainacan-csv.php b/src/exporter/class-tainacan-csv.php
index 3c2955c03..e3f267736 100644
--- a/src/exporter/class-tainacan-csv.php
+++ b/src/exporter/class-tainacan-csv.php
@@ -8,7 +8,8 @@ class CSV extends Exporter {
 
 	public function __construct($attributes = array()) {
 		parent::__construct($attributes);
-		$this->set_mapping_method('any');
+		$this->set_mapping_method('any'); // set all method to mapping
+		//$this->set_mapping_method('list', [ "dublin-core" => "Tainacan\\Exposers\\Mappers\\Dublin_Core" ]); // set specific list of methods to mapping
 	}
 
 	public function process_item( $index, $collection_definition ) {
@@ -16,23 +17,98 @@ class CSV extends Exporter {
 		$tainacan_items = \Tainacan\Repositories\Items::get_instance();
 		
 		$filters = [
-			'posts_per_page' => 12,
+			'posts_per_page' => 1,
 			'paged'   => $index+1,
 			'order'   => 'DESC'
 		];
-		
+
 		$this->add_log('Proccessing item index ' . $index . ' in collection ' . $collection_definition['id'] );
 		$items = $tainacan_items->fetch($filters, $collection_id, 'WP_Query');
 		$export_items = "";
 		while ($items->have_posts()) {
 			$items->the_post();
 			$item = new Entities\Item($items->post);
-			$export_items .= json_encode($item);
+			$printCol = $index == 0;
+			$export_items .= $this->get_item_csv($item, $printCol);
+			$this->add_log('export_items ' . $export_items );
 		}
 		wp_reset_postdata();
 		return $export_items;
 	}
 
+	private function get_item_csv($item, $printCol) {
+		$items_metadata = $item->get_metadata();
+		$prepared_item = [];
+		foreach ($items_metadata as $item_metadata) {
+			array_push($prepared_item, $item_metadata->_toArray());
+		}
+		$mapper = $this->mapping_list[$this->mapping_selected];
+		$instance_mapper = new $mapper();
+		$data = $this->map($prepared_item, $instance_mapper);
+		return $this->str_putcsv($data, ',', '"', $printCol);
+	}
+
+	protected function map($item_arr, $mapper) {
+		$ret = $item_arr;
+		if(array_key_exists('metadatum', $item_arr)) { // getting a unique metadatum
+			$ret = $this->map_metadatum($item_arr, $mapper);
+		} else { // array of elements
+			$ret = [];
+			foreach ($item_arr as $item) {
+				if(array_key_exists('metadatum', $item)) {
+					$ret = array_merge($ret, $this->map($item, $mapper) );
+				} else {
+					$ret[] = $this->map($item, $mapper);
+				}
+			}
+		}
+		return $ret;
+	}
+
+	protected function map_metadatum($item_arr, $mapper) {
+		$ret = $item_arr;
+		$metadatum_mapping = $item_arr['metadatum']['exposer_mapping'];
+		if(array_key_exists($mapper->slug, $metadatum_mapping)) {
+			if(
+					is_string($metadatum_mapping[$mapper->slug]) && is_array($mapper->metadata) && !array_key_exists( $metadatum_mapping[$mapper->slug], $mapper->metadata) ||
+					is_array($metadatum_mapping[$mapper->slug]) && $mapper->allow_extra_metadata != true
+			) {
+				throw new \Exception('Invalid Mapper Option');
+			}
+			$slug = '';
+			if(is_string($metadatum_mapping[$mapper->slug])) {
+				$slug = $metadatum_mapping[$mapper->slug];
+			} else {
+				$slug = $metadatum_mapping[$mapper->slug]['slug'];
+			}
+			$ret = [$mapper->prefix.$slug.$mapper->sufix => $item_arr['value']];
+		} elseif($mapper->slug == 'value') {
+			$ret = [$item_arr['metadatum']['name'] => $item_arr['value']];
+		} else {
+			$ret = [];
+		}
+		return $ret;
+	}
+
+	function str_putcsv($item, $delimiter = ',', $enclosure = '"', $printCol = false) {
+		// Open a memory "file" for read/write...
+		$fp = fopen('php://temp', 'r+');
+		$out=[];
+		$col=[];
+		foreach ($item as $key => $value) {
+			$col[] = $key;
+			$out[] = $value;
+		}
+		if ($printCol) {
+			fputcsv($fp, $col, $delimiter, $enclosure);
+		}
+		fputcsv($fp, $out, $delimiter, $enclosure);
+		rewind($fp);
+		$data = fread($fp, 1048576);
+		fclose($fp);
+		return rtrim($data, "\n");
+	}
+
 	public function options_form() {
 		ob_start();
 		?>
diff --git a/src/exporter/class-tainacan-exporter.php b/src/exporter/class-tainacan-exporter.php
index dddb2b5b3..e85befa94 100644
--- a/src/exporter/class-tainacan-exporter.php
+++ b/src/exporter/class-tainacan-exporter.php
@@ -469,10 +469,10 @@ class Exporter extends CommunImportExport {
 	private $output_files = [];
 	private $mapping_accept = [
 		'any'  => true,
-		'list' => false,
-		'none' => false,
+		'list' => false
 	];
-	private $mapping_list = [];
+	protected $mapping_list = [];
+	public $mapping_selected = "";
 
 	public function __construct($attributess = array()) {
 		$this->array_attributes = array_merge($this->array_attributes, ['current_collection_item', 'current_collection']);
@@ -488,6 +488,7 @@ class Exporter extends CommunImportExport {
 		}
 	}
 
+	//"Tainacan\\Exposers\\Mappers\\Value"
 	public function _to_Array($short = false) {
 		$return = ['id' => $this->get_id()];
 		foreach ($this->array_attributes as $attr) {
@@ -500,12 +501,12 @@ class Exporter extends CommunImportExport {
 		$exporter_definition = $Tainacan_Exporter_Handler->get_exporter_by_object($this);
 
 		if ($short === false) {
-			$return['manual_collection'] = $exporter_definition['manual_collection'];
-			$return['manual_mapping'] = $exporter_definition['manual_mapping'];
-			$return['mapping_accept'] = $this->mapping_accept;
-			$return['mapping_list'] = $this->mapping_list;
-			$return['output_files'] = $this->output_files;
-			$return['options_form'] = $this->options_form();
+			$return['manual_collection'] 	= $exporter_definition['manual_collection'];
+			$return['mapping_selected'] 	= $this->mapping_selected;
+			$return['mapping_accept'] 		= $this->mapping_accept;
+			$return['mapping_list'] 			= $this->mapping_list;
+			$return['output_files'] 			= $this->output_files;
+			$return['options_form'] 			= $this->options_form();
 		}
 
 		return $return;
@@ -594,21 +595,30 @@ class Exporter extends CommunImportExport {
 			$this->append_to_file($key, $data);
 		}
 	}
-	
-	public function set_mapping_method($method, $list = []) {
+
+	public function set_mapping_method($method, $default_mapping = 'value', $list = []) {
 		if ( array_key_exists($method, $this->mapping_accept) ) {
 			foreach ($this->mapping_accept as &$value) {
 				$value = false;
 			}
 			$this->mapping_accept[$method] = true;
-			if(!empty($list)) {
+			if($method == 'any') {
+				$Tainacan_Exposers = \Tainacan\Exposers\Exposers::get_instance();
+				$metadatum_mappers = $Tainacan_Exposers->get_mappers();
+				$this->mapping_list = $metadatum_mappers;
+			} else if(!empty($list)) {
 				$this->mapping_list = $list;
 			}
+			$this->mapping_selected = $default_mapping;
 			return true;
 		}
 		return false;
 	}
-	
+
+	public function set_mapping_selected($mapping_selected) {
+		$this->mapping_selected = $mapping_selected;
+	}
+
 	/**
 	 * runs one iteration
 	 */