How to use Azure DevOps server TFS Predefined Variable in My Ansible Playbook

Question

 want to use Azure DevOps Predefine Variable "$(Build.SourcesDirectory)" in My playbook:

Here is my playbook:

---
- hosts: KBR_MTL361
  tasks:
   - name: copy file
     win_copy:
      src: D:\Web.config
      dest: $(Build.SourcesDirectory)

I am running this ansible-playbook using Azure DevOps Pipeline:

TFS Pipeline Task

But it is not working

Is there anyone who has any idea how to use the variable in the pipeline?