diff --git a/okapi-batch-runner.py b/okapi-batch-runner.py
index 20b6a2a..c64254e 100644
--- a/okapi-batch-runner.py
+++ b/okapi-batch-runner.py
@@ -5,6 +5,7 @@ import re
 import io
 import glob
 import configparser
+import xml.etree.ElementTree as ET
 from pathlib import Path
 
 def select_item(welcome_text, items):
@@ -25,11 +26,15 @@ def select_item(welcome_text, items):
         print('Error! Please enter one number between 1-{}'.format(len(items)))
         exit()
 
+def get_filter(path):
+    return "filter"
+
 
 config = configparser.ConfigParser()
 config.read(os.path.join(sys.path[0],"config.ini"))
 rainbow = config["Options"]["rainbow_exec"]
 
+work_directory = sys.argv[1:]
 
 list_projects = os.listdir(os.path.join(sys.path[0],"projects"))
 project_folder = os.path.join(sys.path[0],"projects",select_item("Available projects:",list_projects))
@@ -38,4 +43,28 @@ project = os.path.join(project_folder,"project.rnb")
 list_pipelines = [os.path.basename(x) for x in glob.glob(os.path.join(sys.path[0],"projects",project_folder,"*.pln"))]
 pipeline = os.path.join(project_folder,select_item("Available pipelines:",list_pipelines))
 
-subprocess.run([rainbow,"-p",project,"-pln",pipeline,"-np"])
+project_config = configparser.ConfigParser()
+project_config.read(os.path.join(project_folder,"project.ini"))
+
+files = []
+
+for directory in work_directory:
+    if any(Path(directory).rglob('*.*')):
+        for translationfile in Path(directory).rglob('*.*'):
+            filter = get_filter(translationfile)
+            if (filter != ""):
+                files.append((translationfile,filter))
+
+
+project_tree = ET.parse(project)
+root = project_tree.getroot()
+
+elem = root.find("./fileSet[@id='1']")
+for item in files:
+    new=ET.Element("fi",attrib={"fs":item[1]})
+    new.text=str(item[0])
+    elem.append(new)
+
+project_tree.write("testproject.rnb",encoding="UTF-8",xml_declaration=True)
+
+#subprocess.run([rainbow,"-p",project,"-pln",pipeline,"-np"])