diff --git a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/record/StockRecord.java b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/record/StockRecord.java
index 0048521..f6a731b 100644
--- a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/record/StockRecord.java
+++ b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/record/StockRecord.java
@@ -99,6 +99,7 @@ public class StockRecord extends Common{
 
 	@JsonProperty(Constants.SCIENTIFIC_ADVICE_JSON_KEY)
 	@CustomField(key=Constants.SCIENTIFIC_ADVICE_CUSTOM_KEY)
+	@TimeSeries
 	@Group(groupNameOverValue=Constants.SCIENTIFIC_ADVICE_CUSTOM_KEY, prependSourceToGroupName=false)
 	private List<TimeSeriesBean<String, Void>> scientificAdvice;
 
diff --git a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/utils/HelperMethods.java b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/utils/HelperMethods.java
index 974c765..878030d 100644
--- a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/utils/HelperMethods.java
+++ b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/utils/HelperMethods.java
@@ -90,8 +90,8 @@ public abstract class HelperMethods {
 		if(origName == null)
 			throw new IllegalArgumentException("origName cannot be null");
 
-		String modified = origName.replaceAll("(", "");
-		modified = origName.replaceAll(")", "");
+		String modified = origName.replaceAll("\\(", "");
+		modified = origName.replaceAll("\\)", "");
 		modified = origName.trim().toLowerCase().replaceAll("[^A-Za-z0-9-]", "-");
 		if(modified.startsWith("-"))
 			modified = modified.substring(1);