diff --git a/src/main/java/com/beanit/iec61850bean/ClientSap.java b/src/main/java/com/beanit/iec61850bean/ClientSap.java
index 0ca8c45..c67f771 100644
--- a/src/main/java/com/beanit/iec61850bean/ClientSap.java
+++ b/src/main/java/com/beanit/iec61850bean/ClientSap.java
@@ -33,11 +33,11 @@ public final class ClientSap {
 
   private static final byte[] DEFAULT_TSEL_LOCAL = new byte[] {0, 0};
   private static final byte[] DEFAULT_TSEL_REMOTE = new byte[] {0, 1};
-  private static final int DEFAUTL_TPDU_SIZE_PARAMETER = 10; // size = 1024
-  private final int proposedMaxServOutstandingCalling = 5;
-  private final int proposedMaxServOutstandingCalled = 5;
-  private final int proposedDataStructureNestingLevel = 10;
+  private static final int DEFAULT_TPDU_SIZE_PARAMETER = 10; // size = 1024
   private final ClientAcseSap acseSap;
+  private int proposedMaxServOutstandingCalling = 5;
+  private int proposedMaxServOutstandingCalled = 5;
+  private int proposedDataStructureNestingLevel = 10;
   private int proposedMaxMmsPduSize = 65000;
   private byte[] servicesSupportedCalling =
       new byte[] {(byte) 0xee, 0x1c, 0, 0, 0x04, 0x08, 0, 0, 0x79, (byte) 0xef, 0x18};
@@ -49,7 +49,7 @@ public final class ClientSap {
     acseSap = new ClientAcseSap();
     acseSap.tSap.tSelLocal = DEFAULT_TSEL_LOCAL;
     acseSap.tSap.tSelRemote = DEFAULT_TSEL_REMOTE;
-    acseSap.tSap.setMaxTPDUSizeParam(DEFAUTL_TPDU_SIZE_PARAMETER);
+    acseSap.tSap.setMaxTPDUSizeParam(DEFAULT_TPDU_SIZE_PARAMETER);
   }
 
   /**
@@ -62,7 +62,7 @@ public final class ClientSap {
     acseSap = new ClientAcseSap(socketFactory);
     acseSap.tSap.tSelLocal = DEFAULT_TSEL_LOCAL;
     acseSap.tSap.tSelRemote = DEFAULT_TSEL_REMOTE;
-    acseSap.tSap.setMaxTPDUSizeParam(DEFAUTL_TPDU_SIZE_PARAMETER);
+    acseSap.tSap.setMaxTPDUSizeParam(DEFAULT_TPDU_SIZE_PARAMETER);
   }
 
   /**
@@ -91,6 +91,18 @@ public final class ClientSap {
     }
   }
 
+  public void setProposedMaxServOutstandingCalling(int proposedMaxServOutstandingCalling) {
+    this.proposedMaxServOutstandingCalling = proposedMaxServOutstandingCalling;
+  }
+
+  public void setProposedMaxServOutstandingCalled(int proposedMaxServOutstandingCalled) {
+    this.proposedMaxServOutstandingCalled = proposedMaxServOutstandingCalled;
+  }
+
+  public void setProposedDataStructureNestingLevel(int proposedDataStructureNestingLevel) {
+    this.proposedDataStructureNestingLevel = proposedDataStructureNestingLevel;
+  }
+
   /**
    * Gets the ServicesSupportedCalling parameter.
    *