I have a tab with 3 containers on it. Each container contains two charts. I also have a couple of buttons. My requirement is that selecting a button (or re-opening the tab) causes a specific chart within each container to activate. I've tried using the Button Action: Activate Object for both the container object and the chart object but it is not working. I do also have an Apply Bookmark Action in my Button Properties Actions if that makes a difference.
This was an issue that I brought up to R&D a while ago. Those who are using certain versions QlikView will notice that these properties no longer produce the desired result. The API for getting the active object and changing the active object programmatically can be found in this article with examples: https://support.qlik.com/articles/000070090