Parameter value with spaces in DSP page

I am using scope tag in my DSP page. I am not able to set parameter value with spaces.
In this page the tag is like this:

%scope param(brokerName=‘Broker #1’)%
%value brokerName%
%invoke serviceName% %endinvoke%
It is displaying ’ only instead of “Broker #1

Does double quotes around the text, or %20 replacing the space work?

No. It does not work.