-| | | ${if1_vlan}= | Run Keyword If | ${${dut_str}_vlan1}
-| | | ... | Set Variable | ${${dut_str}_vlan1}
-| | | ... | ELSE
-| | | ... | Evaluate | ${100} + ${id} - ${1}
-| | | ${if2_vlan}= | Run Keyword If | ${${dut_str}_vlan2}
-| | | ... | Set Variable | ${${dut_str}_vlan2}
-| | | ... | ELSE
-| | | ... | Evaluate | ${200} + ${id} - ${1}
+| | | ${if1_vlan}= | Get Variable Value | \${${dut_str}_vlan1}
+| | | ${default}= | Evaluate | ${100} + ${id} - ${1}
+| | | ${if1_vlan}= | Set Variable If | '${if1_vlan}' == '${NONE}'
+| | | ... | ${default} | ${if1_vlan}
+| | | ${if2_vlan}= | Get Variable Value | \${${dut_str}_vlan2}
+| | | ${default}= | Evaluate | ${200} + ${id} - ${1}
+| | | ${if2_vlan}= | Set Variable If | '${if2_vlan}' == '${NONE}'
+| | | ... | ${default} | ${if2_vlan}