diff --git a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient.java b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient.java
index d11cb77..446d4a9 100644
--- a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient.java
+++ b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/SClient.java
@@ -70,7 +70,7 @@ public abstract class SClient implements Serializable{
 			throws Exception;
 
 	/**
-	 * Cance a computation
+	 * Cancel a computation
 	 * 
 	 * @param computationId computation Id
 	 * @return
diff --git a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/WPS2DM.java b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/WPS2DM.java
index c0b852b..f99d54d 100644
--- a/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/WPS2DM.java
+++ b/src/main/java/org/gcube/data/analysis/dataminermanagercl/server/dmservice/wps/WPS2DM.java
@@ -190,9 +190,15 @@ public class WPS2DM {
 						guessPrimitiveType(guessedType), defaultValue);
 			}
 
-		} else
-			converted = new ListParameter(id, title, String.class.getName(),
+		} else {
+			if(guessedType.compareTo(Boolean.class.getName())==0){
+				converted = new ObjectParameter(id, title, guessedType, defaultValue);
+			} else {
+				converted = new ListParameter(id, title, String.class.getName(),
 					SEPARATOR);
+			}
+			
+		}
 		return converted;
 	}
 
@@ -401,9 +407,14 @@ public class WPS2DM {
 					}
 					if (values.length > 1) {
 						ObjectParameter conv = (ObjectParameter) converted;
-						converted = new EnumParameter(conv.getName(),
-								conv.getDescription(), enumValues,
-								conv.getDefaultValue());
+						if (conv.getType() != null
+								&& !conv.getType().isEmpty()
+								&& conv.getType().compareToIgnoreCase(
+										Boolean.class.getName()) != 0){
+							converted = new EnumParameter(conv.getName(),
+									conv.getDescription(), enumValues,
+									conv.getDefaultValue());
+						}
 					}
 				}
 			} else if (wpsType.isSetComplexData()) {
@@ -525,6 +536,9 @@ public class WPS2DM {
 				return Long.class.getName();
 			else if (typeS.contains("short"))
 				return Short.class.getName();
+			else if (typeS.contains("boolean"))
+				return Boolean.class.getName();
+	
 		}
 
 		return String.class.getName();
@@ -538,6 +552,7 @@ public class WPS2DM {
 	}
 
 	public static String guessPrimitiveType(String type) {
+		
 		if (type.equals(Integer.class.getName())) {
 			return Integer.class.getName();
 		} else if (type.equals(String.class.getName())) {
diff --git a/src/main/java/org/gcube/data/analysis/dataminermanagercl/shared/data/output/Resource.java b/src/main/java/org/gcube/data/analysis/dataminermanagercl/shared/data/output/Resource.java
index 4fdfc53..ad578e8 100644
--- a/src/main/java/org/gcube/data/analysis/dataminermanagercl/shared/data/output/Resource.java
+++ b/src/main/java/org/gcube/data/analysis/dataminermanagercl/shared/data/output/Resource.java
@@ -19,7 +19,7 @@ public class Resource implements Serializable {
 	private static final long serialVersionUID = 1417885805472591661L;
 
 	public enum ResourceType {
-		OBJECT, FILE, TABULAR, MAP, IMAGE, ERROR
+		OBJECT, FILE, TABULAR, MAP, IMAGE
 	};
 
 	private String resourceId, name, description;
@@ -128,9 +128,7 @@ public class Resource implements Serializable {
 		return this.resourceType == ResourceType.IMAGE;
 	}
 
-	public boolean isError() {
-		return this.resourceType == ResourceType.ERROR;
-	}
+	
 
 	@Override
 	public String toString() {
diff --git a/src/test/java/org/gcube/data/analysis/dataminermanagercl/test/BionymLocalTest.java b/src/test/java/org/gcube/data/analysis/dataminermanagercl/test/BionymLocalTest.java
index 5acae1c..1619d68 100644
--- a/src/test/java/org/gcube/data/analysis/dataminermanagercl/test/BionymLocalTest.java
+++ b/src/test/java/org/gcube/data/analysis/dataminermanagercl/test/BionymLocalTest.java
@@ -60,7 +60,7 @@ public class BionymLocalTest extends TestCase {
 							.startComputation(operator);
 					logger.debug("Started ComputationId: " + computationId);
 					monitoringComputation(computationId, sClient);
-					
+				
 				}
 
 				assertTrue("Success", true);
@@ -159,15 +159,16 @@ public class BionymLocalTest extends TestCase {
 		EnumParameter parserName=new EnumParameter();
 		parserName.setName("Parser_Name");
 		parserName.setValue("SIMPLE");
-
-		EnumParameter activatePreparsingProcessing=new EnumParameter();
+		
+		ObjectParameter activatePreparsingProcessing = new ObjectParameter();
 		activatePreparsingProcessing.setName("Activate_Preparsing_Processing");
 		activatePreparsingProcessing.setValue("true");
+		
 
-		EnumParameter useStemmedGenusAndSpecies=new EnumParameter();
+		ObjectParameter useStemmedGenusAndSpecies=new ObjectParameter();
 		useStemmedGenusAndSpecies.setName("Use_Stemmed_Genus_and_Species");
 		useStemmedGenusAndSpecies.setValue("false");
-
+		
 		EnumParameter accuracyVsSpeed=new EnumParameter();
 		accuracyVsSpeed.setName("Accuracy_vs_Speed");
 		accuracyVsSpeed.setValue("MAX_ACCURACY");