Visual Studio 2017 and CR

Hello,

When I right click on the .rpt file in VS and choose Run Custom Tool, it says: "Cannot find custom tool 'CrystalDecisions.VSDesigner.CodeGen.ReportCodeGenerator'. Also I'm not able to automatically generate code for VS

I have CR XI R2 Full version (11.5.12.1838) and Visual Studio prof. 2017 (V 15.9.22).

Thank you for your help

Sophie