diff --git a/DiSLProject2022/src-profiler/ex3/Instrumentation.java b/DiSLProject2022/src-profiler/ex3/Instrumentation.java
index f193fd5..8eabf9e 100644
--- a/DiSLProject2022/src-profiler/ex3/Instrumentation.java
+++ b/DiSLProject2022/src-profiler/ex3/Instrumentation.java
@@ -1,4 +1,15 @@
 package ex3;
 
+import ch.usi.dag.disl.annotation.Before;
+import ch.usi.dag.disl.dynamiccontext.DynamicContext;
+import ch.usi.dag.disl.marker.BytecodeMarker;
+import ch.usi.dag.disl.staticcontext.InstructionStaticContext;
+
 public class Instrumentation {
+    @Before(marker = BytecodeMarker.class, args = "astore", scope = "ex3.MainThread.checkAccess")
+    static void printVariable(final InstructionStaticContext isc, final DynamicContext dc) {
+        if ("granted".equals(dc.getStackValue(0, Object.class))) {
+            System.out.printf("Thread: %s\n", Thread.currentThread().getName());
+        }
+    }
 }