Using multiple parameters in Forena I'm trying to pass multiple parameters from one Forena report to another one.
Currently my link looks like this:

reports/aen_multi?startdate={eventdate}&amp;enddate={eventdate}


but this does not work ("Invalid or malformed report document").

For links with only one parameter this works:

reports/aen_multi?startdate={eventdate}


What is the correct way of linking to a report with several parameters?
After searching a lot more, I came across this discussion which shows that &amp; needs to be encoded as &amp;amp;.
So the working link is:

 reports/aen_multi?startdate={eventdate}&amp;amp;enddate={eventdate}


I'll leave the question up as this might help others.