convert score to int in mongo

src/database/mongo.js

@@ -544,8 +544,8 @@
 			value = value.toString();
 		}
 		var data = {
-			score:score,
-			value:value
+			score: parseInt(score, 10),
+			value: value
 		};
 
 		db.collection('objects').update({_key:key, value:value}, {$set:data}, {upsert:true, w: 1}, function(err, result) {