I have a local html which has a iframe link to a location in google map, I use set_url to link it into Webdialog, will it doesn’t work. However, when I change it to some other websites, some of them works, so doesn’t either. Any one knows why?
Maybe Google Maps does not work in webdialogs? Google Maps often requires a modern browser, unfortunately the web viewing component of Windows (which I assume you use) defaults to the document mode of very old Internet Explorer versions (IE8). Unfortunately SketchUp has no influence to use a different modern browser in webdialogs.
It could be useful to know your operating system version and Internet Explorer/(Safari on OS X) version.
You can try to force Windows’ web viewing component to use the latest installed Internet Explorer document mode (edge).