diff --git a/skyquake/plugins/composer/src/src/libraries/model/DescriptorModelMetaFactory.js b/skyquake/plugins/composer/src/src/libraries/model/DescriptorModelMetaFactory.js
index 69098ec..1ba8912 100644
--- a/skyquake/plugins/composer/src/src/libraries/model/DescriptorModelMetaFactory.js
+++ b/skyquake/plugins/composer/src/src/libraries/model/DescriptorModelMetaFactory.js
@@ -102,19 +102,15 @@
 function serialize_leaf_list(data) {
 	data = data[this.name];
 	if (data) {
-		commaSeparatedValues = data.reduce((d, v) => {
-			let leaf = Serializer.leaf.call(this, d);
-			let value = leaf & leaf[this.name];
-			if (value && value.length) {
-				if (v.length) {
-					v += ', ';
-				}
-				v += value;
+		data = data.reduce((result, value) => {
+			if (value !== '' && value !== null && value !== undefined && typeof value !== 'object') {
+				result.push(value);
 			}
-		}, "");
-		if (commaSeparatedValues.length) {
+			return result;
+		}, []);
+		if (data.length){
 			let obj = {};
-			obj[this.name] = commaSeparatedValues;
+			obj[this.name] = data;
 			return obj;
 		}
 	}