thank you dinesh for the reply and i have already fixed it.
however, i have tried to get the property within the node.content but it doesn't allow me to do so (please see attached file)
the issue is this. i want to get the itemname from the itemtapped. but when I use this
var a = e.Node.Content.ItemName; ------> it is an error
how can we get the item selected on this one?