Create Commend Screen with Trends

Create Commend Screen with Trends

Hi I have a problem with one of my project.

Basically I want to create my own command screen with a trend view.Even though I manage to screen, I couldn't change the variable in Trend element. I try replace in screen but I couldn't succeed.  Also I am unable see variable properties before ı click "action_1" button.

Can some one help with issue?