In this example you want the software to open a custom dialog box to update a service. The software will open this dialog box after a SmartPlant Instrumentation user modifies an instrument.
You can find the example solution in your SmartPlant Instrumentation folder > Examples > SPIExternalExample.sln
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Create a new rule.
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Assign the new rule to an instrument tag item type.
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Define the details of the external update function.
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Write the relevant C# or VB .NET code.
If a SmartPlant Instrumentation user tries to modify an existing instrument tag,
the external function will open a customized dialog box, for example:
