Create String eph1 eph2; eph1 = 'G:\GMAT\Testing\LatestCompleteVersion\data\navdata\otherinputfiles\soh.longeph.pc'; eph2 = 'G:\GMAT\Testing\LatestCompleteVersion\data\navdata\otherinputfiles\soh.longeph.bk.pc'; Create String comp_start comp_end; comp_start = '09 May 2016 00:00:00.000'; comp_end = '01 Jul 2016 00:00:00.000'; %#Include 'G:\GMAT\Testing\Compare\IncludeEphemerisCompare.script'; BeginMissionSequence EphemerisCompareFunction(eph1, eph2, comp_start, comp_end);