fix meta tool environment variable
fix meta tool environment variable

nuest/o2r-muncher,o2r-project/o2r-muncher,nuest/o2r-muncher,o2r-project/o2r-muncher,o2r-project/o2r-muncher,o2r-project/o2r-muncher,o2r-project/o2r-muncher,nuest/o2r-muncher,nuest/o2r-muncher,nuest/o2r-muncher