diff --git a/src/main/java/com/eactive/eai/transformer/engine/Parser.java b/src/main/java/com/eactive/eai/transformer/engine/Parser.java
index 40b0573..98315d0 100644
--- a/src/main/java/com/eactive/eai/transformer/engine/Parser.java
+++ b/src/main/java/com/eactive/eai/transformer/engine/Parser.java
@@ -110,7 +110,8 @@ public class Parser implements Serializable {
         	if (funcDef == null) continue;
         	String functionClass = funcDef.getFunctionClass();
         	if (functionClass == null) continue;
-        	if(!functionClass.startsWith("com.eactive.eai.transformer.function")) {
+        	if(!(functionClass.startsWith("com.eactive.eai.transformer.function")
+        			|| functionClass.startsWith("com.eactive.eai.custom.transformer.function"))) {
         		continue;
         	}
         	
diff --git a/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJDecrypt.java b/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJDecrypt.java
index aa16dc4..6ed9019 100644
--- a/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJDecrypt.java
+++ b/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJDecrypt.java
@@ -47,7 +47,7 @@ public class IniSafeNetKJDecrypt extends PostfixMathCommand {
      
      try {
      	keyMgr = new KeyFixManager(sConf);
-     	decData = keyMgr.decrypt(iniSafeKey, value);    	
+     	decData = keyMgr.decrypt(value);    	
      	inStack.push(decData);
      } catch (Exception e) {
          //throw new ExecutionException(e.getMessage(), parameters, e);
diff --git a/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJEncrypt.java b/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJEncrypt.java
index 77666b3..d9268f3 100644
--- a/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJEncrypt.java
+++ b/src/main/java/com/eactive/eai/transformer/function/crypto/IniSafeNetKJEncrypt.java
@@ -47,7 +47,8 @@ public class IniSafeNetKJEncrypt extends PostfixMathCommand {
         
         try {
         	keyMgr = new KeyFixManager(sConf);
-        	encData = keyMgr.encrypt(iniSafeKey, value);       	
+        	//encData = keyMgr.encrypt(iniSafeKey, value); 
+        	encData = keyMgr.encrypt(value);    
         	inStack.push(encData);
         } catch (Exception e) {
             //throw new ExecutionException(e.getMessage(), parameters, e);
diff --git a/src/main/java/com/eactive/eai/transformer/function/generic/Concat.java b/src/main/java/com/eactive/eai/transformer/function/generic/Concat.java
new file mode 100644
index 0000000..0613c7c
--- /dev/null
+++ b/src/main/java/com/eactive/eai/transformer/function/generic/Concat.java
@@ -0,0 +1,37 @@
+package com.eactive.eai.transformer.function.generic;
+
+import java.util.Stack;
+
+import org.apache.commons.lang3.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+public class Concat extends PostfixMathCommand {
+	public Concat() {
+		numberOfParameters = 2;
+	}
+
+	public void run(Stack inStack) throws ParseException {
+
+		checkStack(inStack);
+
+		Object p2 = inStack.pop();
+
+		if (p2 instanceof String) {
+			String str2 = (String) p2;
+			Object p1 = inStack.pop();
+
+			if (p1 instanceof String) {
+				String str1 = (String) p1;
+
+				inStack.push(str1 + str2);
+
+			} else {
+				throw new ParseException("Invalid parameter type, p1 is not string");
+			}
+		} else {
+			throw new ParseException("Invalid parameter type, p2 is not string");
+		}
+
+	}
+}
diff --git a/src/main/java/com/eactive/eai/transformer/function/generic/Trim.java b/src/main/java/com/eactive/eai/transformer/function/generic/Trim.java
index d7aaf58..c2934fb 100644
--- a/src/main/java/com/eactive/eai/transformer/function/generic/Trim.java
+++ b/src/main/java/com/eactive/eai/transformer/function/generic/Trim.java
@@ -8,13 +8,15 @@ import org.nfunk.jep.function.PostfixMathCommand;
 
 public class Trim extends PostfixMathCommand {
     public Trim() {
-        numberOfParameters = 1;
+        numberOfParameters = 2;
     }
 
     public void run(Stack inStack) throws ParseException {
         checkStack(inStack);
 
         Object p1 = inStack.pop();
+        
+        Object p2 = inStack.pop();
 
         if (p1 instanceof byte[]) {
             inStack.push(new String((byte[]) p1).trim());
diff --git a/src/main/java/com/eactive/eai/transformer/function/validate/isBlank.java b/src/main/java/com/eactive/eai/transformer/function/validate/isBlank.java
new file mode 100644
index 0000000..1ec0d46
--- /dev/null
+++ b/src/main/java/com/eactive/eai/transformer/function/validate/isBlank.java
@@ -0,0 +1,31 @@
+package com.eactive.eai.transformer.function.validate;
+
+import java.util.Stack;
+
+import org.apache.commons.lang3.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+public class isBlank extends PostfixMathCommand {
+
+	public isBlank() {
+		numberOfParameters = 1;
+	}
+
+	public void run(Stack inStack) throws ParseException {
+
+		checkStack(inStack);
+
+		Object p1 = inStack.pop();
+
+		if (p1 instanceof String) {
+			String str1 = (String) p1;
+
+			inStack.push(StringUtils.isBlank(str1));
+
+		} else {
+			throw new ParseException("Invalid parameter type, p1 is not string");
+		}
+	}
+
+}
diff --git a/src/test/java/com/eactive/eai/transformer/ConcatFunction.java b/src/test/java/com/eactive/eai/transformer/ConcatFunction.java
index 9663b3a..1411dfc 100644
--- a/src/test/java/com/eactive/eai/transformer/ConcatFunction.java
+++ b/src/test/java/com/eactive/eai/transformer/ConcatFunction.java
@@ -9,7 +9,7 @@ public class ConcatFunction extends PostfixMathCommand {
 	
 	public ConcatFunction() {
         numberOfParameters = 2;
-    }
+    }                                                                                                                                                                                                                                                                                                                                                      
 	
 	public void run(Stack inStack) throws ParseException {
         checkStack(inStack);
@@ -20,5 +20,6 @@ public class ConcatFunction extends PostfixMathCommand {
         String value = param1 + param2;
 
         inStack.push(value);
-    }
+	}
+    
 }