diff --git a/tests/openonu-go-adapter/Voltha_ONUFlowChecks.robot b/tests/openonu-go-adapter/Voltha_ONUFlowChecks.robot
index 3858c75..c9d8818 100755
--- a/tests/openonu-go-adapter/Voltha_ONUFlowChecks.robot
+++ b/tests/openonu-go-adapter/Voltha_ONUFlowChecks.robot
@@ -63,6 +63,12 @@
 ${pausebeforecleanup}    False
 ${data_dir}    ../data
 
+# flag to choose the subscriber provisioning command type in ONOS
+# TT often provision a single services for a subscriber (eg: hsia, voip, ...) one after the other.
+# if set to True, command used is "volt-add-subscriber-unitag"
+# if set to False, comand used is "volt-add-subscriber-access"
+${unitag_sub}    False
+
 *** Test Cases ***
 Flows Test
     [Documentation]    Validates onu vlan rules in etcd: