Is it possible to concatenate parameteres in iCal URL?

Is it possible to concatenate parameteres in iCal URL?

Hello,
I have successfully made view data available with iCal.

For example with these parameters:

DTSTART=datumtijdaanvang&DESCRIPTION=Docent&SUMMARY=Cursustitel&LOCATION=Locatie&DTEND=datumtijdeinde

What I would like to do is use two fields from my view to be combined as the iCal DESCRIPTION
For example:
DESCRIPTION=Docent+Cursustitel
But unfortunately combining parameters with this syntax doesn't work.

As a workaround I now have an extra field in my view that I automatically update when data is added where that field contains the combined information. I then use that new field as the parameter.

But if there is a syntax with which I can combine the parameters I would very much like to know.
Greetings,
Rob