DDS15 — create_querycondition with a query with string parameters

We identified differences between DDS vendors how to handle a query condition that uses a string parameter. At the moment we have a query with "symbol = %0", what is the query parameter string we need to use when we want to match it with OMG. When using for example C++, RTI Connext DDS seems to require "'OMG'", so single quotes around the string itself, but OpenDDS/Opensplice seem to use "OMG" so without single quotes around the string.

The specification should be clear about how strings are used when they are passed through a query parameter like %0.