Calculate Result in Rows

In a Bex Query, the function NODIM() has been applied to the Key Figure ZAMOUNT. In the rows I have 0UNIT. I want the Result of ZAMOUNT to show an *, when different 0UNIT are involved.

0UNIT AMOUNT

-

M2 700,000

M2 500,000

RESULT 1.200,000

M 10,000

M3 26.000.000,000

RESULT *

Please, someone could help me.

Thanks.