diff --git a/apps/demo-nginx/Jenkinsfile.rollback b/apps/demo-nginx/Jenkinsfile.rollback
index 8d83b57..b41fb18 100644
--- a/apps/demo-nginx/Jenkinsfile.rollback
+++ b/apps/demo-nginx/Jenkinsfile.rollback
@@ -34,7 +34,7 @@ pipeline {
     
     environment {
         APP_NAME = 'demo-nginx'
-        CONTAINER_NAME = 'nginx'  // Fixed: actual container name
+        CONTAINER_NAME = 'nginx'
         NAMESPACE = 'demo-app'
         DOCKER_REGISTRY = 'docker.io'
         DOCKER_REPO = 'vladcrypto'
@@ -48,14 +48,17 @@ pipeline {
                 script {
                     echo "🔍 Validating rollback request..."
                     
-                    if (params.TARGET_VERSION == '') {
+                    // Trim whitespace from input
+                    env.TARGET_VERSION_CLEAN = params.TARGET_VERSION.trim()
+                    
+                    if (env.TARGET_VERSION_CLEAN == '') {
                         error("❌ TARGET_VERSION cannot be empty!")
                     }
                     
                     echo """
                     📋 Rollback Configuration:
                     Method: ${params.ROLLBACK_METHOD}
-                    Target: ${params.TARGET_VERSION}
+                    Target: ${env.TARGET_VERSION_CLEAN}
                     Skip Health Check: ${params.SKIP_HEALTH_CHECK}
                     Dry Run: ${params.DRY_RUN}
                     """
@@ -99,17 +102,17 @@ pipeline {
         stage('Prepare Rollback') {
             steps {
                 script {
-                    echo "🔄 Preparing rollback to: ${params.TARGET_VERSION}"
+                    echo "🔄 Preparing rollback to: ${env.TARGET_VERSION_CLEAN}"
                     
                     if (params.ROLLBACK_METHOD == 'IMAGE_TAG') {
-                        env.TARGET_IMAGE = "${DOCKER_REGISTRY}/${DOCKER_REPO}/${APP_NAME}:${params.TARGET_VERSION}"
+                        env.TARGET_IMAGE = "${DOCKER_REGISTRY}/${DOCKER_REPO}/${APP_NAME}:${env.TARGET_VERSION_CLEAN}"
                         
                         sh """
                             echo "Target image: ${env.TARGET_IMAGE}"
                         """
                         
                     } else if (params.ROLLBACK_METHOD == 'REVISION_NUMBER') {
-                        env.REVISION = params.TARGET_VERSION
+                        env.REVISION = env.TARGET_VERSION_CLEAN
                         
                         sh """
                             echo "Rolling back to revision: ${env.REVISION}"
@@ -120,7 +123,7 @@ pipeline {
                         """
                         
                     } else if (params.ROLLBACK_METHOD == 'GIT_COMMIT') {
-                        env.GIT_SHA = params.TARGET_VERSION
+                        env.GIT_SHA = env.TARGET_VERSION_CLEAN
                         
                         echo "Rolling back to git commit: ${env.GIT_SHA}"
                     }
@@ -161,7 +164,7 @@ pipeline {
                                 
                                 sed -i 's|image: .*|image: ${env.TARGET_IMAGE}|' apps/demo-nginx/deployment.yaml
                                 git add apps/demo-nginx/deployment.yaml
-                                git commit -m "rollback(demo-nginx): Manual rollback to ${params.TARGET_VERSION}" || echo "No changes"
+                                git commit -m "rollback(demo-nginx): Manual rollback to ${env.TARGET_VERSION_CLEAN}" || echo "No changes"
                                 git push origin main
                             """
                         }
@@ -299,7 +302,7 @@ pipeline {
                     This is what would happen:
                     
                     Method: ${params.ROLLBACK_METHOD}
-                    Target: ${params.TARGET_VERSION}
+                    Target: ${env.TARGET_VERSION_CLEAN}
                     
                     Steps that would be executed:
                     1. Update deployment to target version
@@ -326,7 +329,7 @@ pipeline {
                     Application: ${APP_NAME}
                     Container: ${CONTAINER_NAME}
                     Method: ${params.ROLLBACK_METHOD}
-                    Target: ${params.TARGET_VERSION}
+                    Target: ${env.TARGET_VERSION_CLEAN}
                     Namespace: ${NAMESPACE}
                     
                     The application has been rolled back successfully! ✨