diff --git a/n2vc/vnf.py b/n2vc/vnf.py
index d6c87dc..1b9efa8 100644
--- a/n2vc/vnf.py
+++ b/n2vc/vnf.py
@@ -397,7 +397,7 @@
                             **primitives[primitive]['parameters'],
                         )
             except N2VCPrimitiveExecutionFailed as e:
-                self.debug.log(
+                self.log.debug(
                     "[N2VC] Exception executing primitive: {}".format(e)
                 )
                 raise
@@ -447,7 +447,7 @@
                 await model.disconnect()
         except Exception as e:
             self.log.debug("Caught exception while executing primitive: {}".format(e))
-            raise e
+            raise N2VCPrimitiveExecutionFailed(e)
         return uuid
 
     async def RemoveCharms(self, model_name, application_name, callback=None, *callback_args):
diff --git a/tests/test_primitive_non-string_parameter.py b/tests/test_primitive_non-string_parameter.py
new file mode 100644
index 0000000..bae8379
--- /dev/null
+++ b/tests/test_primitive_non-string_parameter.py
@@ -0,0 +1,277 @@
+# A simple test to exercise the libraries' functionality
+import asyncio
+import functools
+import os
+import sys
+import logging
+import unittest
+import yaml
+from n2vc.vnf import N2VC
+
+NSD_YAML = """
+nsd:nsd-catalog:
+    nsd:
+    -   id: multicharmvdu-ns
+        name: multicharmvdu-ns
+        short-name: multicharmvdu-ns
+        description: NS with 1 VNF
+        version: '1.0'
+        logo: osm.png
+        constituent-vnfd:
+        -   vnfd-id-ref: multicharmvdu-vnf
+            member-vnf-index: '1'
+        vld:
+        -   id: datanet
+            name: datanet
+            short-name: datanet
+            type: ELAN
+            vnfd-connection-point-ref:
+            -   vnfd-id-ref: multicharmvdu-vnf
+                member-vnf-index-ref: '1'
+                vnfd-connection-point-ref: vnf-data
+"""
+
+VNFD_YAML = """
+vnfd:vnfd-catalog:
+    vnfd:
+    -   id: multicharmvdu-vnf
+        name: multicharmvdu-vnf
+        short-name: multicharmvdu-vnf
+        version: '1.0'
+        description: A VNF consisting of 1 VDUs w/charm
+        logo: osm.png
+        connection-point:
+        -   id: vnf-data
+            name: vnf-data
+            short-name: vnf-data
+            type: VPORT
+        mgmt-interface:
+            cp: vnf-data
+        internal-vld:
+        -   id: internal
+            name: internal
+            short-name: internal
+            type: ELAN
+            internal-connection-point:
+            -   id-ref: dataVM-internal
+        vdu:
+        -   id: dataVM
+            name: dataVM
+            image: xenial
+            count: '1'
+            vm-flavor:
+                vcpu-count: '1'
+                memory-mb: '1024'
+                storage-gb: '10'
+            interface:
+            -   name: dataVM-eth0
+                position: '1'
+                type: INTERNAL
+                virtual-interface:
+                    type: VIRTIO
+                internal-connection-point-ref: dataVM-internal
+            -   name: dataVM-xe0
+                position: '2'
+                type: EXTERNAL
+                virtual-interface:
+                    type: VIRTIO
+                external-connection-point-ref: vnf-data
+            internal-connection-point:
+            -   id: dataVM-internal
+                name: dataVM-internal
+                short-name: dataVM-internal
+                type: VPORT
+            vdu-configuration:
+                juju:
+                    charm: simple
+                initial-config-primitive:
+                -   seq: '1'
+                    name: config
+                    parameter:
+                    -   name: ssh-hostname
+                        value: <rw_mgmt_ip>
+                    -   name: ssh-username
+                        value: ubuntu
+                    -   name: ssh-password
+                        value: ubuntu
+                -   seq: '2'
+                    name: touch
+                    parameter:
+                    -   name: filename
+                        value: '/home/ubuntu/first-touch-dataVM'
+                -   seq: '3'
+                    name: testint
+                    parameter:
+                    -   name: interval
+                        value: 20
+                config-primitive:
+                -   name: touch
+                    parameter:
+                    -   name: filename
+                        data-type: STRING
+                        default-value: '/home/ubuntu/touched'
+"""
+
+class PythonTest(unittest.TestCase):
+    n2vc = None
+
+    def setUp(self):
+
+        self.log = logging.getLogger()
+        self.log.level = logging.DEBUG
+
+        self.loop = asyncio.get_event_loop()
+
+        # self.loop = asyncio.new_event_loop()
+        # asyncio.set_event_loop(None)
+
+        # Extract parameters from the environment in order to run our test
+        vca_host = os.getenv('VCA_HOST', '127.0.0.1')
+        vca_port = os.getenv('VCA_PORT', 17070)
+        vca_user = os.getenv('VCA_USER', 'admin')
+        vca_charms = os.getenv('VCA_CHARMS', None)
+        vca_secret = os.getenv('VCA_SECRET', None)
+        self.n2vc = N2VC(
+            log=self.log,
+            server=vca_host,
+            port=vca_port,
+            user=vca_user,
+            secret=vca_secret,
+            artifacts=vca_charms,
+        )
+
+    def tearDown(self):
+        self.loop.run_until_complete(self.n2vc.logout())
+
+    def get_descriptor(self, descriptor):
+        desc = None
+        try:
+            tmp = yaml.load(descriptor)
+
+            # Remove the envelope
+            root = list(tmp.keys())[0]
+            if root == "nsd:nsd-catalog":
+                desc = tmp['nsd:nsd-catalog']['nsd'][0]
+            elif root == "vnfd:vnfd-catalog":
+                desc = tmp['vnfd:vnfd-catalog']['vnfd'][0]
+        except ValueError:
+            assert False
+        return desc
+
+    def n2vc_callback(self, model_name, application_name, workload_status, task=None):
+        """We pass the vnfd when setting up the callback, so expect it to be
+        returned as a tuple."""
+        if workload_status and not task:
+            self.log.debug("Callback: workload status \"{}\"".format(workload_status))
+
+            if workload_status in ["blocked"]:
+                task = asyncio.ensure_future(
+                    self.n2vc.ExecutePrimitive(
+                        model_name,
+                        application_name,
+                        "config",
+                        None,
+                        params={
+                            'ssh-hostname': '10.195.8.78',
+                            'ssh-username': 'ubuntu',
+                            'ssh-password': 'ubuntu'
+                        }
+                    )
+                )
+                task.add_done_callback(functools.partial(self.n2vc_callback, None, None, None))
+                pass
+            elif workload_status in ["active"]:
+                self.log.debug("Removing charm")
+                task = asyncio.ensure_future(
+                    self.n2vc.RemoveCharms(model_name, application_name, self.n2vc_callback)
+                )
+                task.add_done_callback(functools.partial(self.n2vc_callback, None, None, None))
+
+    def test_deploy_application(self):
+        stream_handler = logging.StreamHandler(sys.stdout)
+        self.log.addHandler(stream_handler)
+        try:
+            self.log.info("Log handler installed")
+            nsd = self.get_descriptor(NSD_YAML)
+            vnfd = self.get_descriptor(VNFD_YAML)
+
+            if nsd and vnfd:
+
+                vca_charms = os.getenv('VCA_CHARMS', None)
+
+                params = {}
+                vnf_index = 0
+
+                def deploy():
+                    """An inner function to do the deployment of a charm from
+                    either a vdu or vnf.
+                    """
+                    charm_dir = "{}/{}".format(vca_charms, charm)
+
+                    # Setting this to an IP that will fail the initial config.
+                    # This will be detected in the callback, which will execute
+                    # the "config" primitive with the right IP address.
+                    params['rw_mgmt_ip'] = '10.195.8.78'
+
+                    # self.loop.run_until_complete(n.CreateNetworkService(nsd))
+                    ns_name = "default"
+
+                    vnf_name = self.n2vc.FormatApplicationName(
+                        ns_name,
+                        vnfd['name'],
+                        str(vnf_index),
+                    )
+
+                    self.loop.run_until_complete(
+                        self.n2vc.DeployCharms(
+                            ns_name,
+                            vnf_name,
+                            vnfd,
+                            charm_dir,
+                            params,
+                            {},
+                            self.n2vc_callback
+                        )
+                    )
+
+                # Check if the VDUs in this VNF have a charm
+                for vdu in vnfd['vdu']:
+                    vdu_config = vdu.get('vdu-configuration')
+                    if vdu_config:
+                        juju = vdu_config['juju']
+                        self.assertIsNotNone(juju)
+
+                        charm = juju['charm']
+                        self.assertIsNotNone(charm)
+
+                        params['initial-config-primitive'] = vdu_config['initial-config-primitive']
+
+                        deploy()
+                        vnf_index += 1
+
+                # Check if this VNF has a charm
+                vnf_config = vnfd.get("vnf-configuration")
+                if vnf_config:
+                    juju = vnf_config['juju']
+                    self.assertIsNotNone(juju)
+
+                    charm = juju['charm']
+                    self.assertIsNotNone(charm)
+
+                    params['initial-config-primitive'] = vnf_config['initial-config-primitive']
+
+                    deploy()
+                    vnf_index += 1
+
+                self.loop.run_forever()
+
+                # self.loop.run_until_complete(n.GetMetrics(vnfd, nsd=nsd))
+
+                # Test actions
+                #  ExecutePrimitive(self, nsd, vnfd, vnf_member_index, primitive, callback, *callback_args, **params):
+
+                # self.loop.run_until_complete(n.DestroyNetworkService(nsd))
+
+                # self.loop.run_until_complete(self.n2vc.logout())
+        finally:
+            self.log.removeHandler(stream_handler)