updateInterval doesn't work

[tradexsrl]

hi , i have setup an ifram widget like this:

• name: Speedtest
  widgets:
  • type: iframe
    updateInterval: 1800
    options:
    url: http://192.168.10.148/speedtest.html
    frameHeight: 260
    id: 0_2993_iframe
    displayData:
    sortBy: default
    rows: 2
    cols: 1
    collapsed: false
    hideForGuests: false

as you can see i have setup the parameter to autoreload the html page each 1800 seconds but the page is not updated...the only way to see the change is to close the dashy board or right click on that iframe and hit reload this sub page...
i'm using the latest firefox.
please let me know

[tradexsrl]

any news ?
i do an html test page and an iframe inside of it and in a normal html page adding the tag: in the iframe it reload the iframe page.

page.htm

<script>document.write(Date().toString());</script>
<iframe src="frame.htm" title="frame title"></iframe>

iframe.htm

<script>document.write(Date().toString());</script>

with dashy will it works?