diff --git a/charts/modify-vm-resources/Chart.yaml b/charts/modify-vm-resources/Chart.yaml
index b1fab4a2..9a48ee96 100644
--- a/charts/modify-vm-resources/Chart.yaml
+++ b/charts/modify-vm-resources/Chart.yaml
@@ -6,7 +6,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 1.4.0-rc1
+version: 1.4.0-rc2
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
diff --git a/charts/modify-vm-resources/templates/02-configmap_01-modify-vm-resources-resources-schemas.yaml b/charts/modify-vm-resources/templates/02-configmap_01-modify-vm-resources-resources-schemas.yaml
index 8573391c..e35d231e 100755
--- a/charts/modify-vm-resources/templates/02-configmap_01-modify-vm-resources-resources-schemas.yaml
+++ b/charts/modify-vm-resources/templates/02-configmap_01-modify-vm-resources-resources-schemas.yaml
@@ -29,7 +29,8 @@ data:
           "title": "Memory",
           "description": "The new guest memory of the VM",
           "type": "string",
-          "examples": ["2Gi"]
+          "examples": ["2Gi"],
+          "pattern": "^([+-]?[0-9.]+)([eEinumkKMGTP]*[-+]?[0-9]*)$"
         },
         "vm_new_cpu_cores": {
           "title": "CPU Cores",
diff --git a/charts/modify-vm-resources/templates/04-sonataflow_modify-vm-resources.yaml b/charts/modify-vm-resources/templates/04-sonataflow_modify-vm-resources.yaml
index cd9edf10..acd7621f 100755
--- a/charts/modify-vm-resources/templates/04-sonataflow_modify-vm-resources.yaml
+++ b/charts/modify-vm-resources/templates/04-sonataflow_modify-vm-resources.yaml
@@ -45,7 +45,7 @@ spec:
         operation: '{ "result": { "completedWith":"success", "message": "VM " + .vm_name + " in namespace " + .vm_namespace + " updated.", "outputs":[ { "key":"Console URL", "value": $SECRET.cluster_console_url + "/k8s/ns/" + .vm_namespace + "/kubevirt.io~v1~VirtualMachine/" + .vm_name + "/console/standalone", "format":"link" } ] } }'
         type: expression
       - name: errorVMNotRunningResult
-        operation: '{ "result": { "completedWith":"error", "message": "VM " + .vm_name + " in namespace " + .vm_namespace + " not ready after the update after checking" + (.vmStatusRunningRetries|tostring) + " times: " + .vm.status } }'
+        operation: '{ "result": { "completedWith":"error", "message": "VM " + .vm_name + " in namespace " + .vm_namespace + " not ready after the update after checking" + (.vmStatusRunningRetries|tostring) + " times: " + (.vm.status|tostring) } }'
         type: expression
       - name: errorAuthorizationDeniedResult
         operation: '{ "result": { "completedWith":"error", "message": "Authorization denied to update VM " + .vm_name + " in namespace " + .vm_namespace + ". Memory: " + .vm_new_memory + ". CPU cores: " + (.vm_new_cpu_cores|tostring) + ". CPU threads: " + (.vm_new_cpu_threads|tostring) + ". CPU sockets: " + (.vm_new_cpu_sockets|tostring), "outputs":[ { "key":"Jira issue", "value": $SECRET.jira_url + "/jira/servicedesk/projects/" + .projectKey + "/issues/" + .jiraCreateIssueResult.key, "format":"link" }] } }'
@@ -354,7 +354,7 @@ spec:
                 functionRef:
                   arguments:
                     payload:
-                      description: '"VM " + .vm_name + " in namespace " + .vm_namespace + " not ready after the update after checking" + (.vmStatusRunningRetries|tostring) + " times: " + .vm.status'
+                      description: '"VM " + .vm_name + " in namespace " + .vm_namespace + " not ready after the update after checking" + (.vmStatusRunningRetries|tostring) + " times: " + (.vm.status|tostring)'
                       severity: high
                       title: '"VM " + .vm_name + " in namespace " + .vm_namespace + " not ready"'
                       topic: Modify VM Resources workflow
@@ -425,7 +425,7 @@ spec:
   podTemplate:
     container:
       resources: {}
-      image: quay.io/orchestrator/serverless-workflow-modify-vm-resources:8cc116b6a74f709d5e401226579ca6976b591ec6
+      image: quay.io/orchestrator/serverless-workflow-modify-vm-resources:e69ebe8103c918fa403d3a5f0a676753eca3d87d
       envFrom:
         - secretRef:
             name: modify-vm-resources-creds