HOW TO GET MFG_ORGANIZATION_ID IN OAF ?

HI

     I am trying to get MFG_ORGANIZATION_ID in OAF Custom Page but it's displaying NULL after setting Change Organization also , Here is what i did

String mfgOrg = pageContext.getProfile("MFG_ORGANIZATION_ID");

but if i do ORG_ID , it's getting Value but I need INVentory organization Id, Please let me know, How I can get this value ?

Thanks

nk