[galaxy-user] how to add settings of TMPDIR=/scratch for sge/drmaa in universe_wsgi.ini

Hello galaxy gurus, I am trying to configure a local galaxy server to submit to SGE using DRMAA, it works, but I would like to specify the equivalent of "-v TMPDIR=/scratch" for qsub. I tried updating universe_wsgi.ini with something like: default_cluster_job_runner = drmaa://-q default.q -V -v TMPDIR=/scratch/ but that doesn't work because "/" is a delimiter, and I have not been able to find way to escape it. Is there any tricks for this? Much thanks in advance for your help in this matter. -Tin