You need to use Variable in your Field --- HasShowAllItemsTop And Alter your formula -- Zerovaluehasan --- accordingly.
[Button: ShowAllItems] Key:F6 Title: "Show All Items" Title : If ##AllItemsShow = "All Items" Then "Show All Items" Else "Only Non-Zero" Action : Set : AllItemsShow : If ##AllItemsShow = "All Items" Then "Only Non-Zero" Else "All Items" Define variable "AllItemsShow" in Report and also set the same........ Also define the variable........ And then change your Formula for "Zerovaluehasan" You have to do it.........you can do it.