ee-tee

I'm trying to create a Filter vVew to go to our Eents calendar like so: http://192.168.20.81/events?trumbaEmbed=search%3D[key]|Events Notice i have encoded the equal(=) sign to %3D, however Trumba is interpreting the % sign as data and is encoding that to %25. so when i try to search with keyword holiday, my url is ending up to be http://192.168.20.81/events?trumbaEmbed=search%253Dholiday. therefore, my filter is not working. can anyone offer any advice to resolve this?