diff --git a/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java b/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
index e16bc40cc..2a70fb419 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
@@ -19,6 +19,66 @@ import li.strolch.utils.time.PeriodDuration;
  */
 public interface ParameterBagContainer extends StrolchElement {
 
+	/**
+	 * Returns true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 *
+	 * @param paramKey
+	 * 		the parameter to check if it is empty
+	 *
+	 * @return true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 */
+	default boolean isParamEmpty(String paramKey) {
+		return !this.hasParameter(paramKey) || getParameter(paramKey).isEmpty();
+	}
+
+	/**
+	 * Returns true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 *
+	 * @param bagKey
+	 * 		the key from which {@link ParameterBag} to get the parameter
+	 * @param paramKey
+	 * 		the parameter to check if it is empty
+	 *
+	 * @return true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 */
+	default boolean isParamEmpty(String bagKey, String paramKey) {
+		return !this.hasParameter(bagKey, paramKey) || getParameter(bagKey, paramKey).isEmpty();
+	}
+
+	/**
+	 * Returns true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 *
+	 * @param paramKey
+	 * 		the parameter to check if it has a value
+	 *
+	 * @return true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 */
+	default boolean isParamSet(String paramKey) {
+		return this.hasParameter(paramKey) && getParameter(paramKey).isSet();
+	}
+
+	/**
+	 * Returns true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 *
+	 * @param bagKey
+	 * 		the key from which {@link ParameterBag} to get the parameter
+	 * @param paramKey
+	 * 		the parameter to check if it has a value
+	 *
+	 * @return true if the parameter with the given key on the {@link ParameterBag} with the id
+	 * {@link StrolchModelConstants#BAG_PARAMETERS} exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 */
+	default boolean isParamSet(String bagKey, String paramKey) {
+		return this.hasParameter(bagKey, paramKey) && getParameter(bagKey, paramKey).isSet();
+	}
+
 	/**
 	 * Returns the value of the {@link StringParameter} with the given paramKey from the {@link ParameterBag} with the
 	 * ID {@link StrolchModelConstants#BAG_PARAMETERS}
diff --git a/li.strolch.model/src/main/java/li/strolch/model/ParameterizedElement.java b/li.strolch.model/src/main/java/li/strolch/model/ParameterizedElement.java
index 7529293b3..7c4f62333 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/ParameterizedElement.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/ParameterizedElement.java
@@ -92,6 +92,30 @@ public abstract class ParameterizedElement extends AbstractStrolchElement {
 	///
 	///
 
+	/**
+	 * Returns true if the parameter with the given key does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 *
+	 * @param paramKey
+	 * 		the parameter to check if it is empty
+	 *
+	 * @return true if the parameter with the given key does not exist or the value is empty, i.e. {@link Parameter#isEmpty()} returns true
+	 */
+	public boolean isParamEmpty(String paramKey) {
+		return !this.hasParameter(paramKey) || getParameter(paramKey).isEmpty();
+	}
+
+	/**
+	 * Returns true if the parameter with the given key exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 *
+	 * @param paramKey
+	 * 		the parameter to check if it has a value
+	 *
+	 * @return true if the parameter with the given key exists and the value is not empty, i.e. {@link Parameter#isSet()} returns true
+	 */
+	public boolean isParamSet(String paramKey) {
+		return this.hasParameter(paramKey) && getParameter(paramKey).isSet();
+	}
+
 	/**
 	 * Returns the value of the {@link StringParameter} with the given paramKey
 	 *
@@ -925,7 +949,8 @@ public abstract class ParameterizedElement extends AbstractStrolchElement {
 		if (this.parameterMap == null)
 			return Stream.empty();
 
-		return this.parameterMap.values().stream()
+		return this.parameterMap.values()
+				.stream()
 				.filter(p -> p.getInterpretation().equals(interpretation) && p.getUom().equals(uom));
 	}
 
@@ -997,7 +1022,8 @@ public abstract class ParameterizedElement extends AbstractStrolchElement {
 	 * Parameters
 	 */
 	public Map<String, Object> toObjectMap() {
-		return this.parameterMap.values().stream()
+		return this.parameterMap.values()
+				.stream()
 				.collect(toMap(StrolchElement::getId, (Function<Parameter<?>, Object>) Parameter::getValue));
 	}