diff --git a/lab-pipeline.groovy b/lab-pipeline.groovy
index 11ddc84..a1e1082 100644
--- a/lab-pipeline.groovy
+++ b/lab-pipeline.groovy
@@ -53,11 +53,25 @@
 salt = new com.mirantis.mk.Salt()
 test = new com.mirantis.mk.Test()
 
+
+
+
 _MAX_PERMITTED_STACKS = 2
 overwriteFile = "/srv/salt/reclass/classes/cluster/overwrite.yml"
 
 timestamps {
     node {
+        // try to get STACK_INSTALL or fallback to INSTALL if exists
+        try {
+          def temporary = STACK_INSTALL
+        } catch (MissingPropertyException e) {
+          try {
+            STACK_INSTALL = INSTALL
+            env['STACK_INSTALL'] = INSTALL
+          } catch (MissingPropertyException e2) {
+            common.errorMsg("Property STACK_INSTALL or INSTALL not found!")
+          }
+        }
         try {
             //
             // Prepare machines
@@ -168,21 +182,21 @@
                     }
                     // Overwrite Calico vars if specified
                     if (env.getEnvironment().containsKey("CALICO_CNI_IMAGE")) {
-                      salt.runSaltProcessStep(saltmaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calico_cni_image: ${CALICO_CNI_IMAGE}")
+                      salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calico_cni_image: ${CALICO_CNI_IMAGE}")
                     }
                     if (env.getEnvironment().containsKey("CALICO_NODE_IMAGE")) {
-                      salt.runSaltProcessStep(saltmaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calico_node_image: ${CALICO_NODE_IMAGE}")
+                      salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calico_node_image: ${CALICO_NODE_IMAGE}")
                     }
                     if (env.getEnvironment().containsKey("CALICOCTL_IMAGE")) {
-                      salt.runSaltProcessStep(saltmaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calicoctl_image: ${CALICOCTL_IMAGE}")
+                      salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_calicoctl_image: ${CALICOCTL_IMAGE}")
                     }
 
                     // Overwrite netchecker vars if specified
                     if (env.getEnvironment().containsKey("NETCHECKER_AGENT_IMAGE")) {
-                      salt.runSaltProcessStep(saltmaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_netchecker_agent_image: ${NETCHECKER_AGENT_IMAGE}")
+                      salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_netchecker_agent_image: ${NETCHECKER_AGENT_IMAGE}")
                     }
                     if (env.getEnvironment().containsKey("NETCHECKER_SERVER_IMAGE")) {
-                      salt.runSaltProcessStep(saltmaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_netchecker_server_image: ${NETCHECKER_SERVER_IMAGE}")
+                      salt.runSaltProcessStep(saltMaster, 'I@salt:master', 'file.append', overwriteFile, "    kubernetes_netchecker_server_image: ${NETCHECKER_SERVER_IMAGE}")
                     }