Parallax image with dataset

I'm having a hard time understanding exactly what your goal is (what the effect is supposed to look like), but if you are simply trying to make the image look like it's position: fixed inside its container, perhaps you should look at the CSS property background-attachment:聽

https://developer.mozilla.org/en-US/docs/Web/CSS/background-attachment

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Otherwise, if you still need help please make sure you are very clear about the effect you want (maybe provide a sample URL). We don't really do build-to-order things here in the forums, but we're happy to answer any GSAP-specific questions you may have.聽