diff --git a/SQL/PLSQL.sql b/SQL/PLSQL.sql
index 7253299..174d778 100644
--- a/SQL/PLSQL.sql
+++ b/SQL/PLSQL.sql
@@ -1,12 +1,15 @@
 
 
+
 CREATE OR REPLACE FUNCTION mostValuableClerk(months IN NUMBER) RETURN NUMBER
 IS
     startMonat DATE;
+    finalclerkid NUMBER;
+    maxanzahlcleanings NUMBER;
 BEGIN
     startMonat := ADD_MONTHS(SYSDATE,-months);
 
-    SELECT MAX(Anzahl) FROM
+    SELECT CLERKID, MAX(Anzahl) INTO finalclerkid, maxanzahlcleanings FROM
     (
     SELECT DISTINCT CLERKID, COUNT(CLERKID) AS Anzahl
         From
@@ -17,7 +20,8 @@ BEGIN
          WHERE clpl."date" >= startMonat
          )
     GROUP BY CLERKID
-    );
+    )
+    GROUP BY CLERKID;
 
-    return null;
+    return finalclerkid;
 END;
\ No newline at end of file
diff --git a/SQL/TestDaten.sql b/SQL/TestDaten.sql
index 4664b98..e7309ea 100644
--- a/SQL/TestDaten.sql
+++ b/SQL/TestDaten.sql
@@ -9,4 +9,12 @@ INSERT INTO CLEANINGCLERK VALUES (1274689,124890);
 INSERT INTO BOOKING VALUES (124980,TO_DATE('2023-05-01', 'YYYY-MM-DD'),TO_DATE('2023-05-02', 'YYYY-MM-DD'),700,'No Pension',0,1274689);
 INSERT INTO BOOKINGROOM VALUES (124980,19724091);
 INSERT INTO BOOKINGGUEST VALUES (124980,1274689);
-commit;
\ No newline at end of file
+commit;
+
+
+DECLARE
+    clerkid NUMBER;
+BEGIN
+    clerkid := mostValuableClerk(2);
+    DBMS_OUTPUT.PUT_LINE(clerkid);
+end;
\ No newline at end of file