diff --git a/CHANGELOG.md b/CHANGELOG.md
index f040cc4..312a2e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+### Added
+- New `blender.addon.justMyCode` option. True (On) - allow debug a user python code of addon only. False (Off) - allow debug a user python code of addon and external libraries code too. Restart Blender debug session after switch this option.
+
 ## [0.0.19] - 2023-12-05
 
 ### Fixed
diff --git a/src/communication.ts b/src/communication.ts
index 5f91961..ee886b9 100644
--- a/src/communication.ts
+++ b/src/communication.ts
@@ -134,7 +134,7 @@ function SERVER_handleRequest(request: any, response: any) {
             switch (req.type) {
                 case 'setup': {
                     let config = getConfig();
-                    let justMyCode:boolean = <boolean>config.get('addon.justMyCode')
+                    let justMyCode: boolean = <boolean>config.get('addon.justMyCode')
                     let instance = new BlenderInstance(req.blenderPort, req.debugpyPort, justMyCode, req.blenderPath, req.scriptsFolder, req.addonPathMappings);
                     instance.attachDebugger();
                     RunningBlenders.register(instance);
diff --git a/src/python_debugging.ts b/src/python_debugging.ts
index e397831..ab6a633 100644
--- a/src/python_debugging.ts
+++ b/src/python_debugging.ts
@@ -8,14 +8,14 @@ import { AddonPathMapping } from './communication';
 type PathMapping = { localRoot: string, remoteRoot: string };
 
 export async function attachPythonDebuggerToBlender(
-    port: number, blenderPath: string, justMyCode:boolean, scriptsFolder: string,
+    port: number, blenderPath: string, justMyCode: boolean, scriptsFolder: string,
     addonPathMappings: AddonPathMapping[]) {
 
     let mappings = await getPythonPathMappings(scriptsFolder, addonPathMappings);
     attachPythonDebugger(port, justMyCode, mappings);
 }
 
-function attachPythonDebugger(port: number, justMyCode:boolean, pathMappings: PathMapping[] = []) {
+function attachPythonDebugger(port: number, justMyCode: boolean, pathMappings: PathMapping[] = []) {
     let configuration = {
         name: `Python at Port ${port}`,
         request: "attach",