diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..600d2d3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.vscode
\ No newline at end of file
diff --git a/README.md b/README.md
index 0e46dd3..d0b680f 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,13 @@ CLog4mql::release();
 logger.release();
 </code></pre>
 
+## Filename
+You can set dynamically the file name of log with:
+<pre><code>
+const string typeLog=(IsDemo()?"demo":"real";
+logger.setConfLogFile(StringFormat("log4mql-%s-%s.log",typeLog,Symbol()));
+</code></pre>
+
 ## Directories
 The directory for the log4mql.conf and the log4mql.log files
  * Normal mode: `<mt4-data-dir>/MQL4/Files/`
diff --git a/log4mql.mqh b/log4mql.mqh
index 322bedb..49ebd50 100644
--- a/log4mql.mqh
+++ b/log4mql.mqh
@@ -147,6 +147,14 @@ public:
 		instance = NULL;
 	}
 
+	static void setConfLogFile(string logFile)
+	{
+		if(instance!=NULL) {
+			instance.confLogFile=logFile;
+			instance.closeLogFile();
+		}
+	}
+
 public:
 	/**
 	 * Trace