Write Variables

The Write Variables node writes flow variables to disc. They can be read back into a workflow in using a Read Variables node. 'Special' variables (i.e. those whose name starts 'knime.') are ignored, as these have special meanings in KNIME.

This node was developed by Vernalis Research . For feedback and more information, please contact knime@vernalis.com

Options

Selected file
Select a *.variables filename to save the flow variables to. Other file extensions will fail.
Overwrite existing file?
An existing file will be overwritten following a warning if this is checked.

Input Ports

Icon
An optional port for flow variables

Output Ports

This node has no output ports

Popular Predecessors

Popular Successors

  • Variable Loop End18 %
  • External Tool12 %
  • Variable Loop End11 %
  • Loop End9 %
  • Component Output8 %
  • String Configuration8 %
  • Call Local Workflow6 %
  • Excel Writer (XLS)3 %
  • Flow Variable End IF2 %
  • Read Variables2 %
  • Run Garbage Collector2 %
  • Copy/Move Files2 %
  • Variable to Table Row2 %
  • CSV Writer2 %
  • CSV Reader2 %
  • File Reader2 %
  • Java Snippet2 %
  • Chunk Loop Start2 %
  • Variable Condition Loop End2 %
  • Constant Value Column2 %
  • Column Filter2 %
  • Rule Engine2 %
  • Microsoft Access Connector2 %
  • Node Degree Filter2 %

Views

This node has no views

Workflows

Links

Developers

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Installation

To use this node in KNIME, install the extension Vernalis KNIME Nodes from the below update site following our NodePit Product and Node Installation Guide:

v5.12
Plugin provider: Vernalis Research, UK
Plugin version: 1.38.2.v202605270913
On NodePit since: 2026-07-06
Last update: 2026-08-03
KNIME versions: v5.12, v5.11, v5.10, v5.9, v5.8, v5.7, v5.6, v5.5, v5.4, v5.3, v5.2, v5.1, v4.7, v4.6, v4.5, v4.4, v4.3, v4.2, v4.1, v4.0, v3.7, v3.6

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