This is a very good question. The answer is that it depends whether or not you add #1 (or #2, #3,…) to your image name:
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Without #1 (e.g.
XClick | image.png) UIVision sorts after best match. So if the 3rd checkbox in this list happen to be a slightly better match than the others, it will be number 1 in the order. -
With #1 added (e.g.
XClick | image.png#1) UIVision treats all matches above the confidence level as equal. It sorts as top/left to bottom/right. So if the 3rd checkbox in this list happen to be a slightly better match than the others, it will still be number 3 in the order. So this is what you need.
See this video:
Screenshot from video:
