diff --git a/.vscode/launch.json b/.vscode/launch.json
index df55f29..59c45d7 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -10,7 +10,9 @@
                 "<node_internals>/**"
             ],
             "program": "${workspaceFolder}/ninwa.js",
-            "args": []
+            "args": [
+                "example_config.json"
+            ]
         }
     ]
 }
\ No newline at end of file
diff --git a/example_config.json b/example_config.json
index c3574bb..bafaf44 100644
--- a/example_config.json
+++ b/example_config.json
@@ -16,7 +16,7 @@
           "key": "key_f1",
           "combo": [
             "key_f2",
-            "key_f4"
+            "key_f2"
           ],
           "event": "EV_KEY",
           "type": "keydown",
@@ -25,8 +25,8 @@
         {
           "key": "key_f1",
           "combo": [
-            "key_f1",
-            "key_f2"
+            "key_f2",
+            "key_f3"
           ],
           "event": "EV_KEY",
           "type": "keydown",
diff --git a/libs/keyfilter.js b/libs/keyfilter.js
index 186d93e..ecf271d 100644
--- a/libs/keyfilter.js
+++ b/libs/keyfilter.js
@@ -1,6 +1,3 @@
-const comboConfig = require('../config.json').combos;
-const commandConfig = require('../config.json').commands;
-
 const LINE_START = 'Event: time';
 
 const ACTION_KEYUP = { id: 0, action: 'keyup' };
@@ -19,10 +16,10 @@ class Keyfilter {
         this.currentCombo = undefined;
     }
     getCommand(command) {
-        if (command === undefined || commandConfig === undefined) {
+        if (command === undefined || global.config?.commands === undefined) {
             return;
         }
-        const result = commandConfig[command];
+        const result = global.config.commands[command];
         if (result === undefined) {
             return;
         }
@@ -119,11 +116,22 @@ class Keyfilter {
         }
     }
     isParsedEventValid(key, value, parsed) {
-        let keyCheck = key === parsed.key;
-        if (value.combo !== undefined && value.combo.length > 0) {
-            keyCheck = key.includes(parsed.key);
+        if (value.event !== parsed.event || value.type.id !== parsed.type.id) {
+            return false;
         }
-        return keyCheck && (value.event === undefined || value.event === parsed.event) && value.type.id === parsed.type.id;
+        if (value.combo === undefined || value.combo.length === 0) {
+            return key === parsed.key;
+        }
+        if (this.currentCombo === undefined) {
+            return key.startsWith(parsed.key);
+        }
+        for (let index = 0; index < this.currentCombo.possibilities.length; index++) {
+            if (this.currentCombo.possibilities[index].combo[0].toUpperCase() === parsed.key) {
+                this.resetCurrentCombo();
+                return true;
+            }
+        }
+        return false;
     }
     setComboResult(result) {
         if (result === undefined || this.currentCombo === undefined) {
@@ -201,10 +209,6 @@ class Keyfilter {
         if (this.currentCombo === undefined || this.currentCombo.type.id !== parsedEvent.type.id || this.currentCombo.event !== parsedEvent.event) {
             return false;
         }
-        // if (this.currentCombo.done.includes(parsedEvent.key)) {
-        //     parsedEvent.ignore = true;
-        //     return true;
-        // }
         let possibilities = [];
         for (let index = 0; index < this.currentCombo.possibilities.length; index++) {
             const possibility = this.currentCombo.possibilities[index];
@@ -236,13 +240,12 @@ class Keyfilter {
     }
     hasComboTimedOut() {
         return false;
-        return comboConfig !== undefined &&
-            comboConfig.delay !== undefined &&
-            this.currentCombo !== undefined &&
-            this.currentCombo.timestamp !== undefined &&
-            new Date().getTime() - this.currentCombo.timestamp > comboConfig.delay;
+        return global.config?.combos?.delay !== undefined &&
+            this.currentCombo?.timestamp !== undefined &&
+            new Date().getTime() - this.currentCombo.timestamp > global.config?.combos?.dela;
     }
     resetCurrentCombo() {
+        console.debug('resetting current combo...');
         this.currentCombo = undefined;
     }
     isValid() {
diff --git a/ninwa.js b/ninwa.js
index 95ed5ff..795109e 100644
--- a/ninwa.js
+++ b/ninwa.js
@@ -5,24 +5,22 @@ const packageJSON = require('./package.json');
 
 const INTERRUPTS = ['SIGINT', 'SIGTERM'];
 
-let config;
-
 main();
 
 async function main() {
     handleInterrupts();
     try {
         let configFile = await util.getFileInfo(process.argv[2] || __dirname + '/config.json');
-        config = require(configFile.path);
-        config.path = config.path;
+        global.config = require(configFile.path);
+        global.config.path = configFile.path;
     } catch (err) {
         console.error(err);
         process.exit(1);
     }
     try {
-        logger.initialize(config.log.level, config.log.timestamp);
+        logger.initialize(global.config.log.level, global.config.log.timestamp);
         logger.info(packageJSON.name + ' ' + packageJSON.version + ' starting...');
-        await watchers.initialize(config.watchers);
+        await watchers.initialize(global.config.watchers);
         await watchers.start();
     } catch (err) {
         logger.error(err);