tests/modbus/modbus_0@modbus/ModbusTCPclient_0@ModbusTCPclient/ModbusRequest_0@ModbusRequest/confnode.xml
VariablePanel's menu do not waste Wx IDs anymore (directly binds wx objects rather than crating new ID wit wx.NewId)
<?xml version='1.0' encoding='utf-8'?>
<ModbusRequest xmlns:xsd="http://www.w3.org/2001/XMLSchema" Function="16 - Write Multiple Registers" SlaveID="0"/>