Project variables from Keyword tests are not getting identified while running from crossbrowsertesti

I have few variable created at Project level and test level.

When I am triggering Test execution from TestComplete, to execute from crossbrowsertesting.com (CBT), test gets started in CBT but project / Test variables are not getting identified and throwing exception saying particular variable not found.

Example: 

Code in Keyword test: Project.Variable.UserName

Execution Exception: UserName not found

Same script works fine in local machine.