diff --git a/main b/main
new file mode 100755
index 0000000..6500bb2
Binary files /dev/null and b/main differ
diff --git a/server/handler/vmModify.go b/server/handler/vmModify.go
index a580a2a..d52f44b 100644
--- a/server/handler/vmModify.go
+++ b/server/handler/vmModify.go
@@ -24,6 +24,8 @@ func (h *Handler) VmModify(w http.ResponseWriter, r *http.Request) {
 	params := queries.CreateUpdateParams{}
 	var unixTimestamp int64
 
+	//re := regexp.MustCompile(`/([^/]+)/[^/]+\.vmdk$`)
+
 	reqBody, err := io.ReadAll(r.Body)
 	if err != nil {
 		h.Logger.Error("Invalid data received", "error", err)
@@ -52,7 +54,17 @@ func (h *Handler) VmModify(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusAccepted)
 		fmt.Fprintf(w, "Processed update event but no config changes were found\n")
 	} else {
-		h.Logger.Debug("Received event contains config change info", "source", event.CloudEvent.Source, "vm", event.CloudEvent.Data.VM.Name)
+		h.Logger.Debug("Received event contains config change info", "source", event.CloudEvent.Source,
+			"vm", event.CloudEvent.Data.VM.Name, "user_name", event.CloudEvent.Data.UserName)
+
+		// Try to decode the config changes data
+		var testConfig models.ConfigSpec
+		if err := json.Unmarshal(*event.CloudEvent.Data.ConfigSpec, &testConfig); err != nil {
+			h.Logger.Warn("unable to decode ConfigSpec json", "error", err)
+		} else {
+			h.Logger.Debug("successfully decoded ConfigSpec JSON")
+		}
+
 		configChanges = h.processConfigChanges(event.CloudEvent.Data.ConfigChanges.Modified)
 		//prettyPrint(configChanges)
 
@@ -85,6 +97,15 @@ func (h *Handler) VmModify(w http.ResponseWriter, r *http.Request) {
 			if strings.Contains(change["type"], "config.hardware.device") &&
 				strings.Contains(event.CloudEvent.Data.FullFormattedMessage, ".vmdk") {
 
+				// TODO - query current disk size from Inventory table and only create an update if the size is now changed
+				if testConfig.DeviceChange != nil {
+					for i := range testConfig.DeviceChange {
+						if testConfig.DeviceChange[i].Device.Backing != nil {
+							h.Logger.Debug("Found backing in configspec", "backing", testConfig.DeviceChange[i].Device.Backing)
+						}
+					}
+				}
+
 				// TODO - recalculate total disk size
 				h.Logger.Debug("Detected config change for VM disk")
 				found = true
diff --git a/server/models/models.go b/server/models/models.go
index dd9f8c8..80bb956 100644
--- a/server/models/models.go
+++ b/server/models/models.go
@@ -101,37 +101,9 @@ type ConfigSpec struct {
 	DeviceChange          []struct {
 		Backing any `json:"Backing"`
 		Device  struct {
-			Backing struct {
-				Port struct {
-					ConnectionCookie int    `json:"ConnectionCookie"`
-					PortKey          string `json:"PortKey"`
-					PortgroupKey     string `json:"PortgroupKey"`
-					SwitchUUID       string `json:"SwitchUuid"`
-				} `json:"Port"`
-				BackingObjectID string `json:"BackingObjectId"`
-				ChangeID        string `json:"ChangeId"`
-				ContentID       string `json:"ContentId"`
-				Datastore       struct {
-					Type  string `json:"Type"`
-					Value string `json:"Value"`
-				} `json:"Datastore"`
-				DeltaDiskFormat        string `json:"DeltaDiskFormat"`
-				DeltaDiskFormatVariant string `json:"DeltaDiskFormatVariant"`
-				DeltaGrainSize         int    `json:"DeltaGrainSize"`
-				DigestEnabled          any    `json:"DigestEnabled"`
-				DiskMode               string `json:"DiskMode"`
-				EagerlyScrub           bool   `json:"EagerlyScrub"`
-				FileName               string `json:"FileName"`
-				KeyID                  any    `json:"KeyId"`
-				Parent                 any    `json:"Parent"`
-				Sharing                string `json:"Sharing"`
-				Split                  any    `json:"Split"`
-				ThinProvisioned        bool   `json:"ThinProvisioned"`
-				UUID                   string `json:"Uuid"`
-				WriteThrough           any    `json:"WriteThrough"`
-			} `json:"Backing"`
-			CapacityInBytes int `json:"CapacityInBytes"`
-			CapacityInKB    int `json:"CapacityInKB"`
+			Backing         *BackingSpec `json:"Backing,omitempty"`
+			CapacityInBytes int          `json:"CapacityInBytes"`
+			CapacityInKB    int          `json:"CapacityInKB"`
 			Connectable     struct {
 				AllowGuestControl bool   `json:"AllowGuestControl"`
 				Connected         bool   `json:"Connected"`
@@ -173,7 +145,7 @@ type ConfigSpec struct {
 			} `json:"StorageIOAllocation"`
 			VDiskID               any `json:"VDiskId"`
 			VFlashCacheConfigInfo any `json:"VFlashCacheConfigInfo"`
-		} `json:"Device"`
+		} `json:"Device,omitempty"`
 		FileOperation string `json:"FileOperation"`
 		Operation     string `json:"Operation"`
 		Profile       []struct {
@@ -243,3 +215,33 @@ type ConfigSpec struct {
 	VirtualSMCPresent            any    `json:"VirtualSMCPresent"`
 	VMProfile                    any    `json:"VmProfile"`
 }
+
+type BackingSpec struct {
+	Port struct {
+		ConnectionCookie int    `json:"ConnectionCookie"`
+		PortKey          string `json:"PortKey"`
+		PortgroupKey     string `json:"PortgroupKey"`
+		SwitchUUID       string `json:"SwitchUuid"`
+	} `json:"Port"`
+	BackingObjectID string `json:"BackingObjectId"`
+	ChangeID        string `json:"ChangeId"`
+	ContentID       string `json:"ContentId"`
+	Datastore       struct {
+		Type  string `json:"Type"`
+		Value string `json:"Value"`
+	} `json:"Datastore"`
+	DeltaDiskFormat        string `json:"DeltaDiskFormat"`
+	DeltaDiskFormatVariant string `json:"DeltaDiskFormatVariant"`
+	DeltaGrainSize         int    `json:"DeltaGrainSize"`
+	DigestEnabled          any    `json:"DigestEnabled"`
+	DiskMode               string `json:"DiskMode"`
+	EagerlyScrub           bool   `json:"EagerlyScrub"`
+	FileName               string `json:"FileName"`
+	KeyID                  any    `json:"KeyId"`
+	Parent                 any    `json:"Parent"`
+	Sharing                string `json:"Sharing"`
+	Split                  any    `json:"Split"`
+	ThinProvisioned        bool   `json:"ThinProvisioned"`
+	UUID                   string `json:"Uuid"`
+	WriteThrough           any    `json:"WriteThrough"`
+}