Hope you are using QV11 which doesn't have OnActivate triggers for objects anymore. Since you're using alternate states that means you're using QV11. So it's not possible to click on a chart and have an action take place. You could create a button to switch the visibility of the listboxes. Here's an example where a button is used to hide/show two listboxes
still doesn't work.
I want the object to show only if i choose one TARGET_NAME and disappear if I choose more then one or I have more then one possible values
the expressions that you all sent make the object disappear and never shows again.
A stupid question Just to make sure when you write down "StateName "
it means that I need to change to my Alternate State Name of the object Like "Date1"?
Tnx for the help