Building a progress bar that functions across different slides?

Hi Cheng, I did something similar once. I can't say if it was designed the best way, but it worked using a true/false variable for each slide. First in the slide master set each variable to false. And then on each slide set the corresponding variable to True. You can set the adjustment trigger on the feedback layer, when the timeline starts. Second, create a trigger on the slide master for each variable. Change object state... to... if variable equals true.