Widget - evaluation of a specific sub page (no replies)

Hello community,
I just try a widget to integrate into my side, which evaluates only a single base.
To illustrate:
The following single side to be evaluated: www.example.de/site.php?id=4
The statistics to be displayed on www.example.de / statistik.php?

The code of a widget:
<div id="widgetIframe"> <iframe width = "100%" height = "350" src="http://www.example.de/piwik/index.php?module=Widgetize&action=iframe&widget=1&moduleToWidgetize=VisitsSummary&actionToWidgetize=getSparklines&idSite=1&period=day&date=today&disableLink=1&widget=1" scrolling = "no" frameborder = "0" marginheight = "0" marginwidth => "0" </ iframe> </ div>

I am grateful for any help

LG
Faba77