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# clearTaskVar

The `clearTaskVar` method deletes a specified task variable, if it exists.

NOTE: If you delete a variable during a task, the conversation task asks the user to provide a new value for the variable.

## Syntax

    clearTaskVar ( key )

## Arguments

Argument | Description
--- | ---
`key` | (string) The ID of the task variable whose value you want to delete.

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Version 25.3 | Last updated July 2025

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Product: Knowledge Discovery Answer Server 25.3

Topic Title: clearTaskVar