[VOL-3098] ONU Delete and Auto-Discovery

Change-Id: I752a47cb8452f8d5fe32b38b611788249ba2de11
diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index 5e0bc6f..ce81521 100755
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -756,7 +756,7 @@
         # Remove Subscriber Access (To replicate ATT workflow)
         Wait Until Keyword Succeeds    ${timeout}    2s    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}
         ...    ${ONOS_SSH_PORT}    volt-remove-subscriber-access ${of_id} ${onu_port}
-        Verify ping is succesful except for given device     ${num_all_onus}    ${onu_device_id}
+        Verify ping is successful except for given device     ${num_all_onus}    ${src['onu']}
         Sleep    40s
         # Check ONU port is Enabled in ONOS
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds   120s   2s