Report 1306 Standard Sales - Invoice - you do not have permission


We need to add some fields in the report 1306 standard sales-invoice but unfortunately the fields are not present in the DATASET. so now i suppose that we need to modify the DATASET of the report and make a new report which will extend the official report.

To do that we have install the Business central Sandbox Development Environment (we set up a local-hosted container sandbox by following the instructions here

In CSIDE we have seen that it is possible to export the report and then convert it into AL code via the tools Txt2Al but when we try to export from CSIDE we receive the message "You do not have permission to run the 'File, Export, Text'  system" (see picture below)

How to get permission to export report in CSIDE ? 

Maybe it's a licence problem , (see picture below with the CSIDE licence information) ?

Or maybe there is another way to export the report ?

Many thanks for your help.