diff --git a/Dockerfile b/Dockerfile
index b3a8697..a486510 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,10 +9,8 @@ COPY ./src /src
 
 WORKDIR /src
 
-# install dependencies:  js-yaml and papaparse
-# in node, the dependencies are directly install into /src/
-RUN npm install js-yaml
-RUN npm install papaparse
+# install dependencies:  js2args
+RUN npm install js2args@v0.3.0
 
 # run command
 CMD ["node", "run.js"]
\ No newline at end of file
diff --git a/in/parameters.json b/in/parameters.json
index 6314c67..fee51ad 100644
--- a/in/parameters.json
+++ b/in/parameters.json
@@ -5,7 +5,7 @@
         "foo_string": "Never eat yellow snow",
         "foo_enum": "bar",
         "foo_array": [34, 55, 23, 43, 23],
-        "foo_matrix": "/in/foo_matrix.dat",
+        "foo_matrix": "/in/foo_mat.dat",
         "foo_csv": "/in/foo_csv.csv"
     }
 }
\ No newline at end of file
diff --git a/src/getParameter.js b/src/getParameter.js
deleted file mode 100644
index 229d37d..0000000
--- a/src/getParameter.js
+++ /dev/null
@@ -1,80 +0,0 @@
-const { PARAM_FILE, CONF_FILE, TOOL_RUN } = process.env;
-const fs = require('fs');
-const yaml = require('js-yaml');
-const papa = require('papaparse');
-
-const getParameter = () => {
-    // load  parameters file
-    const params = require(PARAM_FILE || '/in/parameters.json');
-
-    // if no tool name was passed, return first configured tool
-    const toolName = TOOL_RUN ? TOOL_RUN : Object.keys(params)[0]
-    
-    // load the yaml file
-    const config = yaml.load(fs.readFileSync(CONF_FILE || '/src/tool.yml'))
-    const toolConf = config['tools'][toolName]
-    
-    // create the kwargs
-    const kwargs = {}
-    
-    // foreach param passed
-    Object.entries(params[toolName]).forEach(([key, val]) => {
-        // get the param conf
-        const parConf = toolConf[key]
-        
-        // if it is not specified, add anyway
-        if (!parConf) {
-            kwargs[key] = val
-        } else {
-            // parse dates
-            if (['date', 'time', 'datetime'].includes(parConf['type'].toLowerCase())) {
-                kwargs[key] = new Date(val)
-            }
-
-            if (parConf['type'] === 'file') {
-                ext = val.split('.').pop().toLowerCase()
-
-                // switch the file extension
-                // json
-                if (ext === 'json') {
-                    kwargs[key] = require(val)
-                } 
-                
-                // dat
-                else if (ext === 'dat') {
-                    raw = fs.readFileSync(val)
-                    const dat = []
-                    raw.split('\n').forEach(line => {
-                        if (!line.startsWith('#')) {
-                            dat.push(line.split(' '))
-                        } 
-                    })
-
-                    // add data
-                    kwargs[key] = dat
-
-                } 
-
-                // read csv data
-                else if (ext === 'csv') {
-                    // 
-                    raw = fs.readFileSync(val).split('\n')
-                    const recs = papa.parse(raw, {header: true})
-
-                    // add 
-                    kwargs[key] = recs
-                }
-
-                // else the tool should handle it
-                else {
-                    // pass the file path anyway, because we don't know this file
-                    kwargs[key] = val
-                }
-            }
-        }
-    })
-    
-    return kwargs;
-}
-
-module.exports = getParameter
\ No newline at end of file
diff --git a/src/run.js b/src/run.js
index 6f0c9c8..1080f70 100644
--- a/src/run.js
+++ b/src/run.js
@@ -1,4 +1,4 @@
-const getParameter = require('./getParameter');
+const getParameter = require('js2args');
 
 // get the tool names
 const toolName = process.env.RUN_TOOL || 'foobar';