Can we update infoobject to cube by lokking at attribute value?

Hi All,

I have a question (this might be in BI space) however I am working on APO BI.

WE have a sitaution were an infoobject character - Salesgroup has attribute (Display) externanl group. When we get sales history file evvery month we get attribute of Salesgroup that is External group in file. When we write to cube we look up at External group and write associates sales group number into the cube - CAn we do this and if yes How?