I still have a problem at this point - I now have the constant between the input and output fields in the calculator editor, and I've generated the language again, but when I go to the MyCalc tab to look at the sandbox concept, I don't see what the screenshot shows (the blank line after the input field and the << ... >> for entering the output field), and whatever I try, I can't add the output field...

Either this tutorial is a bit raw, or the MPS interface needs a lot more work - I understand roughly what is going on, but using the editor is a struggle all the way.

Hi Konstantin,

The MyCalc tab currently looks like this:

I am trying to get to the point shown by the image in my previous post. If I press Insert or Enter at this point (above), I just get another input field - I can't find how to get the blank line and the field area for the output field displayed. I have checked the other tabs and they all look the same as the screenshots in the tutorial at this point. I have tried generating and regenerating all the nodes that have those options, and it all seems fine.

I'm clearly missing something, because the sandbox calculator isn't picking up the output field from the model, but I can't see what. Is there anything else besides generating and regenerating the language and sandbox nodes that I should do?

I have looked at the editor appendix and it all makes sense - maybe it just takes a while to become familiar with using it. I don't usually have this kind of difficulty with new environments, but it's different from most I've tried.

Thanks for your patience :-)

That's exactly what I did following your reply to my first post, and my concept editor now looks exactly like that. As I said, my project now compares exactly to the screenshots up to that point in the tutorial - except for the MyCalc tab.

According to the tutorial, from there the next step is "Now let's generate our language and take a look at our sandbox concept:", so I generated the language and clicked on the MyCalc tab, but it looked the same - no blank line, no new field prompt. So then I generated/regenerated all the project nodes that offered those options, hoping that the sandbox would be updated, but no dice.

But hold the presses - good news!  I just closed the project and reopened it again, and the sandbox calculator MyCalc tab now shows the updated version with the blank line and field prompt. Looks like it was just a glitch that it didn't update properly before. TGFT!

Thanks again for your help Konstantin, here's hoping I get through the rest of it without problems ;-)

Dave