diff --git a/AlgebraicDataflowArchitectureModel/src/simulator/Resource.java b/AlgebraicDataflowArchitectureModel/src/simulator/Resource.java
index a0e8aaf..5f7e67d 100644
--- a/AlgebraicDataflowArchitectureModel/src/simulator/Resource.java
+++ b/AlgebraicDataflowArchitectureModel/src/simulator/Resource.java
@@ -140,4 +140,14 @@
 		}
 		return null;
 	}
+	
+	public Resource getDescendant(String resId) {
+		if (this.getResourceIdentifier().toString().equals(resId)) return this;
+		if (!resId.startsWith(this.getResourceIdentifier().toString())) return null;
+		for (Resource child: getChildren()) {
+			Resource res =  child.getDescendant(resId);
+			if (res != null) return res;
+		}
+		return null;
+	}
 }
diff --git a/AlgebraicDataflowArchitectureModel/src/simulator/ResourceIdentifier.java b/AlgebraicDataflowArchitectureModel/src/simulator/ResourceIdentifier.java
index e744022..bc10858 100644
--- a/AlgebraicDataflowArchitectureModel/src/simulator/ResourceIdentifier.java
+++ b/AlgebraicDataflowArchitectureModel/src/simulator/ResourceIdentifier.java
@@ -60,6 +60,19 @@
 		return ((ResourceIdentifier) parent).length() + 1;
 	}
 	
+	public String toString() {
+		String resId = "";
+		if (parent != null) {
+			resId += parent.toString() + ".";
+		}
+		if (this.getNumberOfParameters() == 0) {
+			resId += name;
+		} else {
+			resId += getLastParam().toString().replace("\"", "");
+		}
+		return resId;
+	}
+	
 	public boolean isInstanceOf(ResourcePath resPath) {
 		ResourcePath resId = this;
 		while (resId != null && resPath != null) {
diff --git a/AlgebraicDataflowArchitectureModel/src/simulator/SystemState.java b/AlgebraicDataflowArchitectureModel/src/simulator/SystemState.java
index 04d5961..e6203f8 100644
--- a/AlgebraicDataflowArchitectureModel/src/simulator/SystemState.java
+++ b/AlgebraicDataflowArchitectureModel/src/simulator/SystemState.java
@@ -48,6 +48,14 @@
 		}
 		return null;
 	}
+	
+	public Resource getResource(String resourceIdentifier) {
+		for (Resource root: rootResources) {
+			Resource descendant = root.getDescendant(resourceIdentifier);
+			if (descendant != null) return descendant;
+		}
+		return null;
+	}
 
 	public ResourceIdentifier updateResourceState(ResourceIdentifier resourceIdentifier, Expression resStateValue) {
 		Type resType = resourceIdentifier.getResourceStateType();