diff --git a/src/main/java/org/gcube/portlets/widgets/wstaskexecutor/client/view/binder/CreateTaskConfigurationView.java b/src/main/java/org/gcube/portlets/widgets/wstaskexecutor/client/view/binder/CreateTaskConfigurationView.java
index 40680d6..46c2f52 100644
--- a/src/main/java/org/gcube/portlets/widgets/wstaskexecutor/client/view/binder/CreateTaskConfigurationView.java
+++ b/src/main/java/org/gcube/portlets/widgets/wstaskexecutor/client/view/binder/CreateTaskConfigurationView.java
@@ -274,17 +274,19 @@ public abstract class CreateTaskConfigurationView extends Composite {
 		customFieldEntriesList.clear();
 		cg_parameters_control.clear();
 
-		boolean addedPublicLink;
+		int countFileParameter=0;
+		boolean addedPublicLink = false;
 
 		for (TaskParameter operator : taskOperator.getInputOperators()) {
-
 			addedPublicLink = false;
-
 			if(!wsItem.isFolder()){
-				//IF ITEM IS A FILE ISTANCING FIRST PARAMETER FILE OCCURED WIHT PUBLIC LINK VALUE OF THE ITEM
-				if(!addedPublicLink && operator.getType().getType().equals("FILE")){
-					appendCustomField("publicLink", wsItem.getPublicLink(), operator.getType().getType(), false);
-					addedPublicLink = true;
+				//IF ITEM IS A FILE ISTANCING ITS FIRST FILE PARAMETER OCCURED (IF IT EXISTS) WIHT THE PUBLIC LINK OF THE ITEM
+				if(operator.getType().getType().equals("FILE")){
+					countFileParameter++;
+					if(countFileParameter==1){
+						appendCustomField("publicLink", wsItem.getPublicLink(), operator.getType().getType(), false);
+						addedPublicLink = true;
+					}
 				}
 			}