diff --git a/main/gradebook/lib/fe/flatviewtable.class.php b/main/gradebook/lib/fe/flatviewtable.class.php
index a320013f42..60abe33fdc 100644
--- a/main/gradebook/lib/fe/flatviewtable.class.php
+++ b/main/gradebook/lib/fe/flatviewtable.class.php
@@ -178,7 +178,7 @@ class FlatViewTable extends SortableTable
 		include_once(api_get_path(LIBRARY_PATH).'pchart/pData.class.php');
 		include_once(api_get_path(LIBRARY_PATH).'pchart/pChart.class.php');
 		include_once(api_get_path(LIBRARY_PATH).'pchart/pCache.class.php');		
-		echo '<pre>';
+		
 		$header_name = $this->datagen->get_header_names();
 		$total_users = $this->datagen->get_total_users_count();
 		$img_file = '';
@@ -192,14 +192,14 @@ class FlatViewTable extends SortableTable
 			$customdisplays = $displayscore->get_custom_score_display_settings();
 			if (is_array($customdisplays) && count(($customdisplays))) { 
 				
-				$user_results = ($this->datagen->get_data_to_graph2());							
+				$user_results = ($this->datagen->get_data_to_graph2());								
 				$pre_result = $new_result = array();			
 				//print_r($user_results);			
 				$DataSet = new pData;
 				//filling the Dataset			
 				foreach($user_results as $result) {
 					//print_r($result);				
-					for($i=0; $i< count($header_name); $i++) {					
+					for($i=0; $i< count($header_name); $i++) {											
 						$pre_result[$i+3][]=$result[$i+1];
 						$pre_result_pie[$i+3][] = $result[$i+1][0]; 				
 					}			
@@ -214,6 +214,7 @@ class FlatViewTable extends SortableTable
 				$show_draw = false;
 				$resource_list = array();			 
 				$pre_result2 = array();
+				//print_r($pre_result); exit;
 				foreach($pre_result as $key=>$res_array) {
 					rsort($res_array);			
 					$pre_result2[] = $res_array;
@@ -243,7 +244,8 @@ class FlatViewTable extends SortableTable
 				//print_r($resource_list); exit;
 				$i = 1;
 				$j = 0;
-				// here-----------------------------------			
+				// here-----------------------------------
+				//print_r($resource_list);			
 				foreach($resource_list as $key=>$resource) {
 					$new_resource_list = $new_resource_list_name = array();				
 					$DataSet = new pData;				
@@ -251,7 +253,7 @@ class FlatViewTable extends SortableTable
 						//$new_resource_list[]=$cant;
 						//$new_resource_list_name[]=$name;					
 						$DataSet->AddPoint($cant,"Serie".$j);
-						$DataSet->SetSerieName($name,"Serie".$j);
+						$DataSet->SetSerieName(strip_tags($name),"Serie".$j);
 						$j++;
 					}								  			
 					//print_r($pre_result); print_r($header_name);			
diff --git a/main/gradebook/lib/flatview_data_generator.class.php b/main/gradebook/lib/flatview_data_generator.class.php
index d71c9f72bd..09ed7a18ed 100644
--- a/main/gradebook/lib/flatview_data_generator.class.php
+++ b/main/gradebook/lib/flatview_data_generator.class.php
@@ -234,7 +234,7 @@ class FlatViewDataGenerator
 				$item_total+=$item->get_weight();									
 				$score_denom=($score[1]==0) ? 1 : $score[1];
 				$score_final = round(($score[0] / $score_denom) * 100,2);		
-				$row[] = array ($score_final, $scoredisplay->display_score($score,SCORE_DIV_PERCENT, SCORE_ONLY_CUSTOM));								
+				$row[] = array ($score_final, strip_tags($scoredisplay->display_score($score,SCORE_DIV_PERCENT, SCORE_ONLY_CUSTOM)));								
 			}	
 			$total_score=array($item_value,$item_total);			
 			$score_final = round(($item_value / $item_total) * 100,2);