Raycast UI RenderTexture to get Point in World Space

Hi everyone,

is there any way to raycast click an UI image to get the point in the scene? The RenderTexture is assigned to a orthographic camera which is floating above the scene. I tried some methods from the forum using “textureCoords”, but I don’t got it to work with UI rawimage.

OR:
Any other way to create a map, where I can add/remove waypoints?

Thanks in advance!
Sorry for bad english^^

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