Submitted variables in Task Complete does not show

I have created a Process with a user task.
I have sent in a Post - Task Complete with variables to Camunda rest engine.

Running
GET /task/{id}/variables
I get a 200, but only {} back

can I view the history, to see that the variabels where persisted or can I view the variables somewhere in Camunda Cockpit

Hi @TommyK100
For completed tasks, you might want to take a look at the following Historic calls
https://docs.camunda.org/manual/7.15/reference/rest/history/task/post-task-query/
https://docs.camunda.org/manual/7.15/reference/rest/history/variable-instance/post-variable-instance-query/

Regards,
Alex