keyin for ifcout to specify output location

I'm trying automate the exporting of ifc files and would like to either be able to nominate the export directory from the keyin.

mdl load TFIFC
$ IFCOUT * c:0 

Alternatively if I can use -wabatchprocess -i and -wc my Startup config file will define TFDIR_IFC. The below doesn't work 


Echo Starting

Start /wait "batch" CMD /c AECOsimBuildingDesigner.exe -wabatchprocess "-iF:\751EW-ST-IFC-TEST.bprc" "-wcF:\FMG_V2_Startup.cfg"

Echo Done