script logic

Hi All,

I am trying to get value A= (value in dimension1.property) - 1

For example, if value in dimension1.property is 8 then A=7.

I try to use following script but it is error (no attribute = PROPERTY -1):

*SELECT(%A%,PROPERTY - 1,DIMENSION1,ID = ASSET)

What is the proper way to achieve the desired result?

P.S:

The script is in the default.lgx in BPC netweaver 10.0

Thank you in advance.