Microstrategy Metric. Help!!

[Guest_imported]

I'm sorry because I'm Spanish, and I write very bad English
This is my problem:

I need create a new metric as:

if atribute.id equals 'DB' (string) then my
metric = Fact saldo * (-1)
else
metric = Fact Saldo
end if

May you help me??

 

[nlim]

you need to use the case functions: check out these technotes

TN5200-071-0120 - How to create metrics with 'CASE' expressions in MicroStrategy SQL Generation Engine 7.1 \
TN5300-7X0-0259 - Case and CaseV functions in the MicroStrategy 7 Analytical Engine

 

[Guest_imported]

Thank you.
I think it runs OK now.
I maked a new fact with both fields using the Case and ApplySimple functions:

This is my fact:
ApplySimple("CASE WHEN #0 in ('DB') THEN ((-1)*#1)
WHEN #0 in ('HB') THEN #1
ELSE #1
END"; [field_atribute ]; field_SALDO)

And then I make the metric with it.

Thank you again.