diff --git a/example-app/jet.yaml b/example-app/jet.yaml
index 35d06d8..96158f7 100644
--- a/example-app/jet.yaml
+++ b/example-app/jet.yaml
@@ -1,6 +1,8 @@
 ---
 basename: "example"
 comment: "JetEZ GO Example"
+arch: "x86"
+abi: "64"
 files:
     - source: hello
       destination: /var/db/scripts/jet/hello
diff --git a/example-app/scripts/activate.sh b/example-app/scripts/activate.sh
new file mode 100644
index 0000000..e69de29
diff --git a/jet/main.py b/jet/main.py
index 83d15f5..9ac0296 100644
--- a/jet/main.py
+++ b/jet/main.py
@@ -72,7 +72,9 @@ def main():
         shutil.rmtree(args.build)
     os.makedirs(args.build)
     os.makedirs('%s/contents' % args.build)
+    os.makedirs('%s/scripts' % args.build)
     contents = "%s/contents/contents" % args.build
+    scripts = "%s/scripts/activate" % args.build
     os.makedirs(contents)
     contents_pkg = '%s/pkg' % contents
     os.makedirs(contents_pkg)
@@ -117,6 +119,17 @@ def main():
     with open(contents_symlink_file, "w") as f:
         f.write(contents_symlink)
 
+    given_scripts_file = os.path.join(args.source, "scripts/activate.sh")
+    init_content = ""
+    with open(given_scripts_file, 'r') as file:
+        init_content = file.read()
+
+    scripts_file = '%s.sh' % scripts
+    log.info("create symlink file %s", scripts_file)
+    with open(scripts_file, "w") as f:
+        f.write(init_content)
+    os.chmod(scripts_file, 0o755)
+
     log.info("sign manifest file %s" % content_manifest_file)
     crypto.sign(content_manifest_file, "%s.sig" % content_manifest_file, args.key, args.cert)
 
@@ -128,13 +141,16 @@ def main():
     shutil.rmtree(contents)
 
     log.info("create package.xml")
-    utils.create_package_xml(project, args.version, package, args.build)
+    utils.create_package_xml(project, version, package, args.build)
 
     package_manifest = "/set package_id=31 role=Provider_Daemon\n"
-    package_manifest_files = ["contents/contents.iso", "contents/contents.symlinks", "package.xml"]
+    package_manifest_files = ["contents/contents.iso", "contents/contents.symlinks", "scripts/activate.sh", "package.xml"]
 
     for f in package_manifest_files:
-        package_manifest += "%s sha1=%s\n" % (f, crypto.generate_sha1(os.path.join(args.build, f)))
+        if "scripts" not in f:
+            package_manifest += "%s sha1=%s\n" % (f, crypto.generate_sha1(os.path.join(args.build, f)))
+        else:
+            package_manifest += "%s sha1=%s program_id=1\n" % (f, crypto.generate_sha1(os.path.join(args.build, f)))
 
     package_manifest_file = os.path.join(args.build, "manifest")
     log.info("create manifest file %s", package_manifest_file)
diff --git a/jet/utils.py b/jet/utils.py
index 997c305..65853bd 100644
--- a/jet/utils.py
+++ b/jet/utils.py
@@ -101,7 +101,7 @@ def load_project(project_file, version):
     :rtype: dict
     """
     with open(project_file , 'r') as f:
-        project_yaml = yaml.load(f)
+        project_yaml = yaml.load(f, Loader=yaml.FullLoader)
 
     def required(d, k):
         if k in d:
@@ -114,9 +114,11 @@ def required(d, k):
         "basename": required(project_yaml, "basename"),
         "files": [],
         "comment": project_yaml.get("comment", "JET app %s" % project_yaml["basename"]),
-        "arch": project_yaml.get("arch", "x86"),
-        "abi": project_yaml.get("abi", "32"),
+        "arch": required(project_yaml, "arch"),
+        "abi": required(project_yaml, "abi"),
         "copyright": project_yaml.get("copyright", "Copyright %s, Juniper Networks, Inc." % timestamp.year),
+        "mounted-action": project_yaml.get("mounted-action", "scripts/activate.sh"),
+        "deleting-action": project_yaml.get("deleting-action", "scripts/activate.sh"),
         "package_id": project_yaml.get("package_id", 31),
         "role": project_yaml.get("role", "Provider_Daemon"),
         "date": timestamp.strftime("%Y%m%d"),
@@ -186,8 +188,10 @@ def package_xml_file(filename):
     etree.SubElement(package_xml, "basename").text = project["basename"]
     etree.SubElement(package_xml, "comment").text = "%s [%s]" % (project["comment"], version)
     etree.SubElement(package_xml, "copyright").text = project["copyright"]
+    etree.SubElement(package_xml, "deleting-action").text = project["deleting-action"]
     etree.SubElement(package_xml, "description").text = project["basename"]
     etree.SubElement(package_xml, "mntname").text = "%s%s-%s" % (project["basename"], project["abi"], binascii.b2a_hex(os.urandom(4)).decode())
+    etree.SubElement(package_xml, "mounted-action").text = project["mounted-action"]
     etree.SubElement(package_xml, "require").text = "junos-runtime32"
     etree.SubElement(package_xml, "version").text = project["date"]
     etree.SubElement(package_xml, "spin").text = project["time"]
@@ -201,5 +205,7 @@ def package_xml_file(filename):
     dir = etree.SubElement(package_xml, "dir", name="contents")
     package_xml_file("contents/contents.iso")
     package_xml_file("contents/contents.symlinks")
+    dir = etree.SubElement(package_xml, "dir", name="scripts")
+    package_xml_file("scripts/activate.sh")
     with open("%s/package.xml" % path, "w+") as f:
         f.write(etree.tostring(package_xml, pretty_print=True).decode("utf8"))