How do I get the height of a Tile after it grows?

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I have been trying with zero luck to get the width/height of a Tile after each component of differing width/heights are added to it.

Essentially… I want to add images to a Tile until it reaches a specified width/height, then create a new Tile and begin adding images to that.

I am so lost! I tried listening for the ResizeEvent of the Tile, but it’s oldWidth and oldHeight attributes are NEVER populated