Sheet.<id> reference does not work

[Scaffold]

Hello everyone!


I was trying to reference shape custom cells by using she Sheet.<id> reference I read about in different places. However, it does not work. I just get no prompts when I attempt to write formula and Visio keeps telling me there is an error in the formula, no matter what. What can be the reason? Is it something to do with a localized version of Visio? Any ideas? The ultimate aim I am after is to make text field inside the shape to display the text defined in the custom cell of a shape itself.