first I connect the local opc ua file to the tulip opc ua connector and get/read data value using machine, And mapped values using machine attributes and we show data value in tulip apps using variable. Now I would like to write values using the tulip interface and store values in machine attributes.
Currently there is no direct way to write to Machine(OPC). Writing to machine can be achieved using Node Red. You can refer What are Connectors? and Communicate with Machines using Edge MC's Connector Host & Node-RED