Cannot write values to Prosys OPC UA server variables

[Tevel]

Hello everyone.

I am new at Node-Red and I have trouble writing values to variables on the Prosys OPC UA server.
Reading values is working alright.

I have the following structure. Inject seems to work yet the value on the OPC server does not change.
No errors are recorded

Here is the picture of the settings. Variable in OPC is set to "constant".

Any idea on why I cannot write to OPC will be greatly appreciated.
Also if you need any further information from my side, please let me know.

Thank you

[Tevel]

I have found the solution.

Before, OPC UA client, you need to add OPC UA Item block where you define a tag to write to.