Problem when drawing with dynamic parameter about go-app HOT 3 CLOSED

I think that your markup is not good. There should not be a h1 tag in a .svg

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I don't think that's the issue. I added the <h1> only after problem showed, and I wanted to test if the two "if" conditions work.

If I changed the ".X" and ".Y" into 45, 45, in <circle> tag, I can draw like this:

Modify: I didn't got nothing on my board when passing .X and .Y. I got a quarter of circle whose center is on (0,0), and radius is 12. So I think the <circle> tag didn't receive any value from cx and cy, so it used the default value 0,0.

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OMG!!! I fixed it by:
<circle cx="{{.X}}" cy="{{.Y}}" r="12" fill="black" />

And I don't know why it need {{}} to pass in parameters. But it works.

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