Hi Meenal,
Edit properties:
Change to {1} and click “Edit”
Click “New” and select the Attribute or Attribute over the association.
Go make it
Hi Meenal,
You can either the method suggested by Marco or,
you can click in the listview and then you can drag-drop the particular attribute from the connector tab into the listview.
You can refer to the image below, for the connector tab
In the connector tab you can find all the attributes to add, as soon as you click in the listview.
Let me know if you face any issues,
Hope it helps!
**EDITED**
Meenal,
To add any attributes in the page, it has to be inside a dataview/ listview. To understand better on Mendix look at the below vidoes