bamboo-spec include not working for common job

[Dave Attard]

I have build plans working with bamboo-specs and i would like to pull out the common parts into an include. I have read and re-read the specs and i cant work it out

bamboo-specs
| - bamboo.yml
| - Services
    | - build-ServiceA.yml
    | - build-ServiceB.yml
| - Common
    | - build-job.yml

---
!include 'Services\build-ServiceA.yml'
---
!include 'Services\build-ServiceB.yml'

folder\build-ServiceA.yml-> working

---
version: 2
plan:
  project-key: XXX
  key: XXXXX
  name: Build Service
stages:
- Build:
    jobs:
    - Build-Service
Build-Service:
  key: JOB1
  tasks:
  - clean
  - script:
      interpreter: WINDOWS_POWER_SHELL
      scripts:
      - |-
        Set-Location ./${bamboo.solution}
        dotnet restore -v q
      description: Restore
  - script:
      interpreter: WINDOWS_POWER_SHELL
      scripts:
      - |-
        Set-Location ./${bamboo.solution}/${bamboo.serviceFolder}
        dotnet publish -c Release -v q -o ${bamboo.working.directory}/packages
        description: publish
  artifacts:
  - name: ${bamboo.solution}
    location: packages
    pattern: '**/*'
    shared: true
    required: true
  artifact-subscriptions: []
variables:
  solution: service
  serviceFolder: folder
triggers: []
repositories:
- Repo
branches:
  create:
    for-new-branch: (release|feature)/.+
  delete:
    after-deleted-days: 1
    after-inactive-days: 30
  link-to-jira: true

What i would like to do is move the Build-Service job into a common include file. Looking at the spec information on includes i should be able to do this. However when i make the changes

folder\build-ServiceA.yml-> error 

Bamboo YAML import failed: Invalid format of the YAML file: Include file ..\COMMON\build-job.yaml does not exist

---
version: 2
plan:
  project-key: XXX
  key: XXXXX
  name: Build Service
stages:
- Build:
  jobs:
  - Build-Service

Build-Service: !include '..\common\build-job.yml'

triggers: []
repositories:
- Repo
branches:
  create:
    for-new-branch: (release|feature)/.+
  delete:
    after-deleted-days: 1
    after-inactive-days: 30
  link-to-jira: true

common\build-job.yml

  tasks:
  - clean
  - script:
      interpreter: WINDOWS_POWER_SHELL
      scripts:
      - |-
        Set-Location ./${bamboo.solution}
        dotnet restore -v q
        description: Restore
  - script:
      interpreter: WINDOWS_POWER_SHELL
      scripts:
      - |-
        Set-Location ./${bamboo.solution}/${bamboo.serviceFolder}
        dotnet publish -c Release -v q -o ${bamboo.working.directory}/packages
      description: publish
  artifacts:
  - name: ${bamboo.solution}
    location: packages
    pattern: '**/*'
    shared: true
    required: true
  artifact-subscriptions: []

[Dave Attard · Accepted solution]

Build-Service: !include 'common\build-job.yml'