diff --git a/core/src/main/java/lucee/commons/io/log/log4j2/layout/JsonLayout.java b/core/src/main/java/lucee/commons/io/log/log4j2/layout/JsonLayout.java
index b57cf83170..64a54a57af 100644
--- a/core/src/main/java/lucee/commons/io/log/log4j2/layout/JsonLayout.java
+++ b/core/src/main/java/lucee/commons/io/log/log4j2/layout/JsonLayout.java
@@ -37,11 +37,13 @@
 import lucee.loader.engine.CFMLEngineFactory;
 import lucee.loader.util.Util;
 import lucee.runtime.PageContext;
+import lucee.runtime.PageContextImpl;
 import lucee.runtime.converter.ConverterException;
 import lucee.runtime.converter.JSONConverter;
 import lucee.runtime.converter.JSONDateFormat;
 import lucee.runtime.engine.ThreadLocalPageContext;
 import lucee.runtime.exp.PageException;
+import lucee.runtime.interpreter.JSONExpressionInterpreter;
 import lucee.runtime.op.Caster;
 import lucee.runtime.security.Credential;
 import lucee.runtime.type.Array;
@@ -63,10 +65,10 @@ public class JsonLayout extends AbstractStringLayout { // TODO <Serializable>
 	private boolean doComma = true;
 	private final Charset charset;
 	private boolean compact;
-	private boolean complete;
 	private boolean hasEnvLoaded;
 	private Object token = new Object();
 	private StructImpl envs;
+	private boolean complete;
 	private String[] envNames;
 
 	// private static final DateFormat dateFormat = new DateFormat(Locale.US);
@@ -166,12 +168,26 @@ public String toSerializable(final LogEvent event) {
 						}
 					}
 				}
+				// extract message
+				String strMSG;
 				if (jsonSupported) {
-					root.setEL("message", ((MultiformatMessage) msg).getFormattedMessage(FORMATS));
+					strMSG = ((MultiformatMessage) msg).getFormattedMessage(FORMATS);
 				}
 				else {
-					root.setEL("message", msg.getFormattedMessage());
+					strMSG = msg.getFormattedMessage();
 				}
+				if (strMSG == null) strMSG = "";
+
+				// split application name
+				int index = strMSG.indexOf("->");
+				String application;
+				if (index > -1) {
+					application = strMSG.substring(0, index);
+					strMSG = strMSG.substring(index + 2);
+				}
+				else application = "";
+				root.setEL("application", application);
+				root.setEL("message", toJson(strMSG, strMSG));
 			}
 
 			// Thrown
@@ -219,8 +235,10 @@ public String toSerializable(final LogEvent event) {
 			// thread
 			{
 				Thread thread = Thread.currentThread();
-				root.setEL("threadId", thread.getId());
-				root.setEL("threadId", thread.getPriority());
+				Struct th = util.createStruct("linked");
+				th.setEL("id", thread.getId());
+				th.setEL("priority", thread.getPriority());
+				root.setEL("thread", th);
 			}
 
 			if (this.locationInfo) {
@@ -259,6 +277,11 @@ public String toSerializable(final LogEvent event) {
 				}
 				else user = remoteUser.getUsername();
 				if (!Util.isEmpty(user, true)) root.setEL("authUser", user);
+
+				root.setEL("pageContextId", pc.getId());
+				if (pc instanceof PageContextImpl) {
+					root.setEL("requestId", ((PageContextImpl) pc).getRequestId());
+				}
 			}
 
 			// env var
@@ -313,6 +336,23 @@ public String toSerializable(final LogEvent event) {
 
 	}
 
+	private static Object toJson(String strJson, Object defaultValue) {
+		if (StringUtil.isEmpty(strJson)) {
+			return defaultValue;
+		}
+
+		if (!(strJson.startsWith("{") && strJson.endsWith("}") || strJson.startsWith("[") && strJson.endsWith("]"))) {
+			return defaultValue;
+		}
+
+		try {
+			return new JSONExpressionInterpreter().interpret(ThreadLocalPageContext.get(), strJson);
+		}
+		catch (PageException e) {
+			return defaultValue;
+		}
+	}
+
 	private Object createStacktrace(Creation util, StackTraceElement[] stackTraces, boolean stacktraceAsString) throws PageException {
 
 		// Stacktrace
diff --git a/core/src/main/java/lucee/runtime/functions/conversion/IsJSON.java b/core/src/main/java/lucee/runtime/functions/conversion/IsJSON.java
index d54a6f726a..0acf4433bd 100644
--- a/core/src/main/java/lucee/runtime/functions/conversion/IsJSON.java
+++ b/core/src/main/java/lucee/runtime/functions/conversion/IsJSON.java
@@ -28,6 +28,11 @@ public class IsJSON {
 	public static boolean call(PageContext pc, Object obj) {
 		String str = Caster.toString(obj, null);
 		if (StringUtil.isEmpty(str, true)) return false;
+
+		if (!(str.startsWith("{") && str.endsWith("}") || str.startsWith("[") && str.endsWith("]"))) {
+			return false;
+		}
+
 		try {
 			new JSONExpressionInterpreter().interpret(pc, str);
 			return true;
diff --git a/loader/build.xml b/loader/build.xml
index 3415d15057..4e35154472 100644
--- a/loader/build.xml
+++ b/loader/build.xml
@@ -2,7 +2,7 @@
 <project default="core" basedir="." name="Lucee" 
   xmlns:resolver="antlib:org.apache.maven.resolver.ant">
 
-  <property name="version" value="5.4.4.33-SNAPSHOT"/>
+  <property name="version" value="5.4.4.34-SNAPSHOT"/>
 
   <taskdef uri="antlib:org.apache.maven.resolver.ant" resource="org/apache/maven/resolver/ant/antlib.xml">
     <classpath>
diff --git a/loader/pom.xml b/loader/pom.xml
index 3c21c3442b..8b1cb82ccb 100644
--- a/loader/pom.xml
+++ b/loader/pom.xml
@@ -3,7 +3,7 @@
 
   <groupId>org.lucee</groupId>
   <artifactId>lucee</artifactId>
-  <version>5.4.4.33-SNAPSHOT</version>
+  <version>5.4.4.34-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>Lucee Loader Build</name>