Artifact Download Task does not expand variables on Bamboo 9

Problem

This is reproducible on Data Center: 

Artifact Download Task is not expanding variables on Bamboo 9.

This is a regression as it is not reproducible in Bamboo <= 8.2

Environment

Bamboo 9 (not reproducible on Bamboo 8)

Steps to Reproduce

1. Add an Artifact Download task to a Plan
2. Set the Destination path as a Global, Project or Plan variable (it even works with injected variables)

Expected Results

Bamboo should expand the variables and store the artifacts correctly

Actual Results

Bamboo treats the variables as strings and stores the artifacts in literal folders named after the variable names. E.g.:

[bamboo@bambooserver ABC-CON-JOB1]$ ls -al
total 8
drwxr-x---.  2 bamboo bamboo   24 Sep 29 13:57 '${bamboo.buildNumber}'

Workarounds

Option 1:

• Do not use variables on the Destination Path

Option 2:

• Add a Script task before the Artifact Download task that would:
  • Create static folders based on the variables names you desire
    and
  • Create symbolic links pointing to the recently created folders

    # Using ${bamboo.product_name_core} as an example
    # It can be any variable
    
    # Create the folder based on the variable value
    mkdir ${bamboo.product_name_core}
    
    # On Linux run
    ln -s ${bamboo_product_name_core} static-product-name-core
    
    # On Windows run
    # mklink /D ${bamboo.product_name_core} static-product-name-core
    

• Use the symbolic link location (static-product-name-core) on the Destination Path of the Artifact Download task

Notes