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# deleteTaskVar

The `deleteTaskVar` 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

    deleteTaskVar ( key )

## Arguments

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

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