Hi AmelRamulic,

I'm not exactly sure what you mean by calling up a report from Crystal Reports with SQL. Could you elaborate on that?

You do have the ability in your Crystal Reporting software to make connection to the database and get information straight from there. 

I want to add a checkbox as a button and when i click on the checkbox i get a print preview of the report thats linked with the task

It is not possible to Print a report while adding/editing a row. It is only possible after the saving of that record for example. A Process flow can start upon adding/editing a row and after that is completed, a report can be previewed. That can also be after the Task was executed.

Alternatively, you can add the report to the table by connecting it in the Software Factory at Reports → Table reports.

Note: if you don't see the Report button in the application, check the screentype if it has a Report bar