Create new variables on a task

This endpoint can be used in 2 ways: By passing a JSON Body (RestVariable or an Array of RestVariable) or by passing a multipart/form-data Object. It is possible to create simple (non-binary) variable or list of variables or new binary variable Any number of variables can be passed into the request body array. NB: Swagger V2 specification does not support this use case that is why this endpoint might be buggy/incomplete if used with other tools.