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A comma or other symbol in a Signal’s name can trigger a false syntax error — remove it in text mode to fix the save.
Symptoms:
  • Unable to save a new Signal.
  • The following error appears: “Expression syntax error: Only a single value may be specified for signal. Use AND or OR check for multiple values.”
Cause: Commas or other symbols within the title of a Signal name can lead to a syntax error that prevents you from saving or updating a Signal. Resolution: Switch to text mode to remove any commas that may be in the Signal name. Applies to: Signals

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Last modified on September 23, 2026