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Create an Expression Set for Predictive Maintenance

Create an expression set that filters the estimated cost and time required for a repair based on the diagnostic trouble code (DTC) shared by Qualcomm’s Car to Cloud system via Mulesoft. The result is shared with the driver in real time based on which the driver can request for available slots at their nearest service center.

Required Editions

Available in: Enterprise, Unlimited, and Developer Editions.
User Permissions Needed
To create an expression set: Rule Engine Designer
  1. In the App Launcher, find and select Expression Sets.
    1. Click New.
    2. Enter a name.
      For example, Repair Estimate Based on DTC.
    3. Save your changes.
  2. Click Expression Set Versions.
    1. Click New.
    2. Enter a version name.
    3. Enter a version number.
    4. Save your changes.
  3. Click Open in Expression Set Builder.
    1. Drag and drop the Lookup Table element to the canvas.
    2. For Lookup Table Details, select DTC Code Map.
    3. Select DTC Name as an input variable.
    4. Select these as output variables.
    • Maximum Repair Cost
    • Minimum Repair Cost
    • Estimated Time in Days
    1. Drag and drop the Calculation element to the canvas after the Lookup Table element.
    2. For Formula, enter “USD”.
    3. For Output Variable, select a local variable Currency.
    4. Save your changes.
  4. Activate the expression set.