Constant

The Constant operation outputs a single, fixed value of a configurable type. It has no inputs and is not a trigger — it simply provides a static value that downstream operations can consume when they execute.

Inputs

This operation has no inputs.

Outputs

Port	Type	Default	Description
Out	String, Integer, Float, Boolean, or Nil	(per type)	The configured constant value. Type follows the Const type picker (Property-driven).
SlotName	String		The name of the slot running this operation.

Properties

Name	Type	Default	Description
Const type	StackedDataSet	String Value	Data type and value of the output. Sub-types:
String Value	String	""	A text string.
Integer Value	Integer	0	A signed 32-bit integer.
Number Value	Number (Double)	0	A floating-point number.
Boolean Value	Boolean	true	true or false.

This Operation can never err: it has no Input to check and no completion that can fail, so its Node carries no On Error verb.

State on Reload

No state is preserved. The output is always determined by the configured properties.

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How It Works

1. Read properties — The operation reads its Const type and the corresponding value.

2. Set output — The configured value is exposed on the Out output as the appropriate MessagePack type. The SlotName output provides the name of the slot in which the operation is running.

Static by design

The output never changes at runtime. If you need a value that varies, use a different operation.

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Examples

Data format

All inputs and outputs use MessagePack internally. The examples below show values in JSON notation for readability.

Integer

Const type: Integer Value   Value: 42

Output (Out): 42

Number

Const type: Number Value   Value: 3.14

Output (Out): 3.14

Boolean

Const type: Boolean Value   Value: true

Output (Out): true

String

Const type: String Value   Value: "Hello, World!"

Output (Out): "Hello, World!"

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Use Cases

• Providing fixed configuration parameters (thresholds, labels, flags)
• Injecting test data into a workflow
• Supplying default values for optional inputs of other operations

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Limitations

• Outputs a single, fixed value. For dynamic or computed values, use other operations.
• The Nil type is also available as a Const type option, producing an implicit Nil output.