diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/tools/input/InputOutputVariablesPanel.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/tools/input/InputOutputVariablesPanel.java
index 04771cb..affaf76 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/tools/input/InputOutputVariablesPanel.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/tools/input/InputOutputVariablesPanel.java
@@ -371,7 +371,7 @@ public class InputOutputVariablesPanel extends ContentPanel {
 				&& project.getProjectConfig().getProjectSupport() != null) {
 			if (project.getProjectConfig().getProjectSupport() instanceof ProjectSupportBlackBox
 					|| project.getProjectConfig().getProjectSupport() instanceof ProjectSupportBashEdit) {
-
+				Log.debug("Show button Add I/O Variables for this project");
 				btnAdd = new TextButton("Add");
 				btnAdd.setIcon(StatAlgoImporterResources.INSTANCE.add16());
 				btnAdd.setScale(ButtonScale.SMALL);