Animation not aligned to the center

I’m working on a simple animation for a music equalizer effect, so I have several lines that must change size based on time delay and expand or shrink randomly from the center of the line. I set the triggers correctly but the lines keep changing from the side, not the center.

https://www.figma.com/proto/JSg6VKRZO8cXwrShJoUe6G/Navid-Concepts?node-id=256%3A12&viewport=7262%2C-10125%2C1.225095272064209&scaling=scale-down

can’t see your file, don’t think you’ve shared for anyone with a link?