With the provided information it's impossible to answer this. However, as it looks like you have a text display next to it - does that display change when the value changes? What we have to do here to analyze this: 1. Is the item actually connected correctly and does it change when the source changes? 2. When the source (i.e. OPC-UA server) changes the value can you see that change in UA Expert as well? If not, the OPC-UA server has probably not been setup correctly. Please provide the log file and the HMI for analysis.
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