diff --git a/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/BooleanToFlag.java b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/BooleanToFlag.java
new file mode 100644
index 0000000..6c3a271
--- /dev/null
+++ b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/BooleanToFlag.java
@@ -0,0 +1,37 @@
+package com.eactive.eai.custom.transformer.function.userdefined;
+
+import java.util.Stack;
+
+import org.apache.commons.lang.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+
+public class BooleanToFlag extends PostfixMathCommand {
+    public BooleanToFlag() {
+        numberOfParameters = -1;
+    }
+
+    public void run(Stack inStack) throws ParseException {
+        checkStack(inStack);
+
+        Object p1 = inStack.pop();
+
+        String strInStack = "";
+        String resultStr = "";
+        if (p1 instanceof byte[]) {
+        	strInStack = new String((byte[]) p1);
+        } else if (p1 instanceof String) {
+        	strInStack = (String) p1;
+        } else {
+            throw new ParseException("Invalid parameter type, p1 is not string/bytes");
+        }
+
+        if (StringUtils.equalsIgnoreCase(strInStack, "TRUE")) {
+    		resultStr = "Y";
+    	} else {
+    		resultStr = "N";
+    	}
+    	inStack.push(resultStr);
+    }
+}
diff --git a/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/ContainsString.java b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/ContainsString.java
new file mode 100644
index 0000000..0829b91
--- /dev/null
+++ b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/ContainsString.java
@@ -0,0 +1,59 @@
+package com.eactive.eai.custom.transformer.function.userdefined;
+
+import java.util.Stack;
+
+import org.apache.commons.lang.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+
+public class ContainsString extends PostfixMathCommand {
+    public ContainsString() {
+        numberOfParameters = -1;
+    }
+
+    public void run(Stack inStack) throws ParseException {
+        checkStack(inStack);
+
+        if (curNumberOfParameters == 4) {
+            Object p4 = inStack.pop();
+            if (p4 instanceof String) {
+	            String falseVal = (String) p4;
+	            Object p3 = inStack.pop();	
+	            if (p3 instanceof String) {
+	            	String trueVal = (String) p3;
+	                Object p2 = inStack.pop();
+	                if (p2 instanceof String) {
+	                    String str = (String) p2;
+	                    Object p1 = inStack.pop();
+	                    if (p1 instanceof String) {
+	                    	String originStr = (String) p1;
+	                    	if (StringUtils.contains(originStr, str)) {
+	                    		inStack.push(trueVal);
+	                    	} else {
+	                    		inStack.push(falseVal);
+	                    	}
+	                    } else if (p1 instanceof byte[]) {
+	                    	String originStr = new String((byte[]) p1);
+	                    	if (StringUtils.contains(originStr, str)) {
+	                    		inStack.push(trueVal);
+	                    	} else {
+	                    		inStack.push(falseVal);
+	                    	}
+	                    } else {
+	                    	throw new ParseException("Invalid parameter type, p1 is not string/bytes");
+	                    }
+	                } else {
+	                	throw new ParseException("Invalid parameter type, p2 is not String");
+	                }
+	            } else {
+	                throw new ParseException("Invalid parameter type, p3 is not String");
+	            }
+	        } else {
+	            throw new ParseException("Invalid parameter type, p4 is String");
+	        }
+        } else {
+            throw new ParseException("invalid parameter count : " + curNumberOfParameters + " - parameter count must be 4");
+        }
+    }
+}
diff --git a/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/FlagToBoolean.java b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/FlagToBoolean.java
new file mode 100644
index 0000000..e42460b
--- /dev/null
+++ b/src/main/java/com/eactive/eai/custom/transformer/function/userdefined/FlagToBoolean.java
@@ -0,0 +1,37 @@
+package com.eactive.eai.custom.transformer.function.userdefined;
+
+import java.util.Stack;
+
+import org.apache.commons.lang.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+
+public class FlagToBoolean extends PostfixMathCommand {
+    public FlagToBoolean() {
+        numberOfParameters = -1;
+    }
+
+    public void run(Stack inStack) throws ParseException {
+        checkStack(inStack);
+
+        Object p1 = inStack.pop();
+
+        String strInStack = "";
+        String resultStr = "";
+        if (p1 instanceof byte[]) {
+        	strInStack = new String((byte[]) p1);
+        } else if (p1 instanceof String) {
+        	strInStack = (String) p1;
+        } else {
+            throw new ParseException("Invalid parameter type, p1 is not string/bytes");
+        }
+
+        if (StringUtils.equalsIgnoreCase(strInStack, "Y")) {
+    		resultStr = "True";
+    	} else {
+    		resultStr = "False";
+    	}
+    	inStack.push(resultStr);
+    }
+}