diff --git a/src/praktikum01/Zahlenfilter.java b/src/praktikum01/Zahlenfilter.java
index 6c04d91..fc54be8 100644
--- a/src/praktikum01/Zahlenfilter.java
+++ b/src/praktikum01/Zahlenfilter.java
@@ -1,8 +1,16 @@
 package praktikum01;
 
 public class Zahlenfilter {
+    int range = 200;
     public static void main(String[] args) {
         Zahlenfilter check = new Zahlenfilter();
+        if(args.length >0){
+            try{
+                check.range = Integer.parseInt(args[0]);
+            }catch (NumberFormatException e){
+                System.out.println("Syntax error");
+            }
+        }
         check.checkNumbers();
     }
     public void checkNumbers(){
@@ -11,21 +19,21 @@ public class Zahlenfilter {
         numberAndPredecessorDividableByThree();
     }
     public void checkForFive (){
-        for (int i = 1; i <= 200; i++) {
+        for (int i = 1; i <= range; i++) {
             if (i%5 ==0){
                 System.out.println(i + "ist durch 5 teilbar" );
             }
         }
     }
     public void endsWithNine (){
-        for (int i = 1; i <= 200; i++) {
+        for (int i = 1; i <= range; i++) {
             if (i%10 ==9){
                 System.out.println(i + "endet auf 9");
             }
         }
     }
     public void numberAndPredecessorDividableByThree(){
-        for (int i = 2; i <= 200; i++) {
+        for (int i = 2; i <= range; i++) {
             int predecessor = i - 1;
             int sum = i + predecessor;
 
@@ -34,7 +42,4 @@ public class Zahlenfilter {
             }
         }
     }
-
-
-
 }