Integrated Planning and MS Analysis: Inserting new values

Hi gurus,

i'm trying to replicate the same features of an IP worksheet(based on BEx) to a MS Analysis(version 2.3) worksheet .

I can't find the way to insert new rows in which a Customer is not in BW master data: I created a ZCUSTOMER characteristic, but with Bex alalyzer it is possible to insert a non-master data value, while i can't do the same in Analysis worksheet (in ready-for-input rows , a question mark appears for match-code).

Is there a way or workaround to make it work?

thanx a lot