diff --git a/cloudstack/BackupService.go b/cloudstack/BackupService.go
index 1a00485..92033d8 100644
--- a/cloudstack/BackupService.go
+++ b/cloudstack/BackupService.go
@@ -922,8 +922,7 @@ func (p *CreateVMFromBackupParams) toURLValues() url.Values {
 	if v, found := p.p["userdatadetails"]; found {
 		m := v.(map[string]string)
 		for i, k := range getSortedKeysFromMap(m) {
-			u.Set(fmt.Sprintf("userdatadetails[%d].key", i), k)
-			u.Set(fmt.Sprintf("userdatadetails[%d].value", i), m[k])
+			u.Set(fmt.Sprintf("userdatadetails[%d].%s", i, k), m[k])
 		}
 	}
 	if v, found := p.p["userdataid"]; found {
diff --git a/cloudstack/VirtualMachineService.go b/cloudstack/VirtualMachineService.go
index 80f6521..675b5c8 100644
--- a/cloudstack/VirtualMachineService.go
+++ b/cloudstack/VirtualMachineService.go
@@ -11450,7 +11450,7 @@ func (s *VirtualMachineService) ListVirtualMachinesUsageHistory(p *ListVirtualMa
 
 type ListVirtualMachinesUsageHistoryResponse struct {
 	Count                       int                            `json:"count"`
-	VirtualMachinesUsageHistory []*VirtualMachinesUsageHistory `json:"virtualmachinesusagehistory"`
+	VirtualMachinesUsageHistory []*VirtualMachinesUsageHistory `json:"virtualmachine"`
 }
 
 type VirtualMachinesUsageHistory struct {
diff --git a/generate/generate.go b/generate/generate.go
index 9ba9bc8..448b614 100644
--- a/generate/generate.go
+++ b/generate/generate.go
@@ -2076,6 +2076,9 @@ func (s *service) generateResponseType(a *API) {
 		case "listSecondaryStorageSelectors":
 			pn("	Count int `json:\"count\"`")
 			pn("	%s []*%s `json:\"%s\"`", ln, parseSingular(ln), "heuristics")
+		case "listVirtualMachinesUsageHistory":
+			pn("    Count                       int                            `json:\"count\"`")
+			pn("    VirtualMachinesUsageHistory []*VirtualMachinesUsageHistory `json:\"virtualmachine\"`")
 		case "listHostHAResources":
 			pn("	Count int `json:\"count\"`")
 			pn("	%s []*%s `json:\"%s\"`", ln, parseSingular(ln), "hostha")
diff --git a/test/testdata/VirtualMachineService.json b/test/testdata/VirtualMachineService.json
index d0f36a3..0347d0b 100644
--- a/test/testdata/VirtualMachineService.json
+++ b/test/testdata/VirtualMachineService.json
@@ -505,5 +505,67 @@
       "completed": "2021-10-13T04:54:56+0000",
       "jobid": "f9a9af61-47ea-4fb7-acc9-93ea50f12042"
     }
+  },
+  "listVirtualMachinesUsageHistory": {
+    "listvirtualmachinesusagehistoryresponse": {
+      "count": 1,
+      "virtualmachine": [
+        {
+          "id": "4f6d7879-8e9d-40cb-9390-28924a31df78",
+          "name": "i-5-39-VM",
+          "displayname": "ubuntu-01",
+          "stats": [
+            {
+              "timestamp": "2024-12-31T17:54:37+0600",
+              "cpuused": "55.56%",
+              "diskioread": 0,
+              "diskiowrite": 0,
+              "diskiopstotal": 0,
+              "diskkbsread": 0,
+              "diskkbswrite": 0,
+              "memoryintfreekbs": 182168,
+              "memorykbs": 1048576,
+              "memorytargetkbs": 1048576,
+              "networkkbsread": 0,
+              "networkkbswrite": 0,
+              "networkread": "0.00 MiB",
+              "networkwrite": "0.00 MiB"
+            },
+            {
+              "timestamp": "2024-12-31T17:54:37+0600",
+              "cpuused": "0.2%",
+              "diskioread": 0,
+              "diskiowrite": 0,
+              "diskiopstotal": 0,
+              "diskkbsread": 0,
+              "diskkbswrite": 0,
+              "memoryintfreekbs": 182168,
+              "memorykbs": 1048576,
+              "memorytargetkbs": 1048576,
+              "networkkbsread": 0,
+              "networkkbswrite": 0,
+              "networkread": "0.00 MiB",
+              "networkwrite": "0.00 MiB"
+            },
+            {
+              "timestamp": "2024-12-31T17:54:37+0600",
+              "cpuused": "11.43%",
+              "diskioread": 0,
+              "diskiowrite": 0,
+              "diskiopstotal": 0,
+              "diskkbsread": 0,
+              "diskkbswrite": 0,
+              "memoryintfreekbs": 182168,
+              "memorykbs": 1048576,
+              "memorytargetkbs": 1048576,
+              "networkkbsread": 0,
+              "networkkbswrite": 0,
+              "networkread": "0.00 MiB",
+              "networkwrite": "0.00 MiB"
+            }
+          ]
+        }
+      ]
+    }
   }
-}
\ No newline at end of file
+}