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Goals and Symptoms
Unity Pro documentation states that you cannot manipulate any variables in the monitoring mode, however users have found that it is possible.
Facts and Changes
Unity Pro V2.2 and older.
Causes and Fixes
This is a known issue and will be fixed in a future Unity Pro version. For example, users accessing the PLC can modify variables in the animation table. The future release will prevent any modification to the PLC in the monitor mode.