Example:
(in my project I am using a text variable but that is for specific reasons. YOu only need to use a name variable)
Further examples from my project. Slightly different setup but maybe it’s helpful:
Here is the widget itself, just a button:
Button use in another widget:
Where ever you add the button, just select it and search in the details panel for your “name” variable. Because it is instance editable, that means you can type in a unique name for each button, and that will be what is used to lookup in the data table row.
Using the name variable that I passed along to look up some data in a Map variable (this is different from what you are wanting to do, I just add as another practical example, but as you can see, the variable you set as an input gets sent along so you can use it elsewhere)
