diff --git a/li.strolch.model/src/main/java/li/strolch/model/parameter/FloatListParameter.java b/li.strolch.model/src/main/java/li/strolch/model/parameter/FloatListParameter.java
index 3014c324e..81f80b6f1 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/parameter/FloatListParameter.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/parameter/FloatListParameter.java
@@ -116,6 +116,11 @@ public class FloatListParameter extends AbstractParameter<List<Double>> implemen
 		return this.value.isEmpty();
 	}
 
+	@Override
+	public int size() {
+		return this.value.size();
+	}
+
 	@Override
 	public boolean contains(Double value) {
 		return this.value.contains(value);
diff --git a/li.strolch.model/src/main/java/li/strolch/model/parameter/IntegerListParameter.java b/li.strolch.model/src/main/java/li/strolch/model/parameter/IntegerListParameter.java
index ebdb4dd86..640d2f967 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/parameter/IntegerListParameter.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/parameter/IntegerListParameter.java
@@ -116,6 +116,11 @@ public class IntegerListParameter extends AbstractParameter<List<Integer>> imple
 		return this.value.isEmpty();
 	}
 
+	@Override
+	public int size() {
+		return this.value.size();
+	}
+
 	@Override
 	public boolean contains(Integer value) {
 		return this.value.contains(value);
diff --git a/li.strolch.model/src/main/java/li/strolch/model/parameter/ListParameter.java b/li.strolch.model/src/main/java/li/strolch/model/parameter/ListParameter.java
index 4f3fc44d3..be1c8374a 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/parameter/ListParameter.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/parameter/ListParameter.java
@@ -56,6 +56,13 @@ public interface ListParameter<E> extends Parameter<List<E>> {
 	 * @returns true if the list of values is empty, false if not
 	 */
 	public boolean isEmpty();
+	
+	/**
+	 * Returns the size of the list of values
+	 * 
+	 * @returns the size of the list of values
+	 */
+	public int size();
 
 	/**
 	 * Returns true if the list of values contains the given element, false if not
diff --git a/li.strolch.model/src/main/java/li/strolch/model/parameter/LongListParameter.java b/li.strolch.model/src/main/java/li/strolch/model/parameter/LongListParameter.java
index 181d79ca0..b9436342b 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/parameter/LongListParameter.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/parameter/LongListParameter.java
@@ -116,6 +116,11 @@ public class LongListParameter extends AbstractParameter<List<Long>> implements
 		return this.value.isEmpty();
 	}
 
+	@Override
+	public int size() {
+		return this.value.size();
+	}
+
 	@Override
 	public boolean contains(Long value) {
 		return this.value.contains(value);
diff --git a/li.strolch.model/src/main/java/li/strolch/model/parameter/StringListParameter.java b/li.strolch.model/src/main/java/li/strolch/model/parameter/StringListParameter.java
index 8da218551..01d29dcff 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/parameter/StringListParameter.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/parameter/StringListParameter.java
@@ -116,6 +116,11 @@ public class StringListParameter extends AbstractParameter<List<String>> impleme
 		return this.value.isEmpty();
 	}
 
+	@Override
+	public int size() {
+		return this.value.size();
+	}
+
 	@Override
 	public boolean contains(String value) {
 		return this.value.contains(value);