How do I resize a full-animated object ?

I made a full-animated object, after I exported the scene I realized it was too big. I want to resize it, I tried to block all the frames and hold shift to select objects I want to resize, then use transform to resize. But doesn’t work. My frames got messed up instead. Any advice ?
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It depends on how your “object” exists in scene. If it’s a single layer you can resize it with the Transform or Scale tools, making sure the Animate mode (yellow stick figure icon) is off. Hold shift to make sure you won’t deform the elements. If you have more than one layer you can connect them all to a peg.

On Scaling with the Transform Tool: https://docs.toonboom.com/help/harmony-15/premium/staging/scale-transform-tool.html?Highlight=transform

On adding pegs: https://docs.toonboom.com/help/harmony-15/premium/motion-path/add-peg.html