I am just using the Matrikon Simulation OPC Server for testing, and I can read all the values desired within RapidScada with no issue.
Using MatrikonOPCExplorer I can set the “Bucket Bridge.Boolean” between 0 and 1.
I configured RapidScada Communicator for the above channel as “write data” with a command number 1. Sending command from the Communicator “Commands” tab got “The command was sent successfully”. However, the value in the “Device Data” tab does not seem to change.