Updates or deletes the variables visible from the task. Updates precede deletions. So, if a variable is updated AND deleted, the deletion overrides the update. A variable is visible from the task if it is a local task variable or declared in a parent scope of the task. See documentation on visiblity of variables.
Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.
The id of the task to set variables for.
Request successful.