Calculate with conditions

[Ybam]

Hi , 
I have a table like this :

KPI ID	Value	Version
1	10	V1
1	9	V1
1	5	V2
2	3	V1
2	4	V1
3	7	V1
4	6	V1
4	6	V2
5	15	V1
5	12	V1
5	100	V2

I create a measure because data for KPI = 5 are not in the good aggregation. 
Measure= 
VAR _A = 
CALCULATE (
   SUM(Value),

   KPI <>5
   && Version = "V1"

)
VAR _B =
DIVIDE ( 

CALCULATE (
   SUM(Value),
   KPI =4
   && Version = "V1"

), 

CALCULATE (
   SUM(Value),
   KPI IN {1, 2, 3}
   && Version = "V1"

)

) 
RETURN 

    IF (

        Max(KPI)= 5,

        _B

        , _A

    )

My result : 

KPI	Measure
1	19
2	7
3	7
4	6
5

Desired result :

KPI	Measure
1	19
2	7
3	7
4	6
5	0.18

Can you help me?

[Greg_Deckler]

@Ybam When KPI is 5, the other KPI numbers are not in context so you need to use ALL or ALLSELECTED to bring them back into context like this:

Measure= 
VAR _A = 
CALCULATE (
   SUM(Value),
   KPI <>5
   && Version = "V1"

)
VAR _B =
DIVIDE ( 

CALCULATE (
   SUM(Value),
   ALL('Table'),
   KPI =4 && Version = "V1"

), 

CALCULATE (
   SUM(Value),
   ALL('Table'),
   KPI IN {1, 2, 3} && Version = "V1"

)

) 
RETURN 

    IF (
        Max(KPI)= 5,
        _B
        , _A
    )

[Ybam]

@Greg_Deckler Thank you very very mutch it works.
But if I want to slipt result my month I have only total .
I would like my result loolks like this. 

Month	Jan.	Feb	March	....
KPI	Measure	Measure	Measure
1	19	5	5
2	7	10	5
3	7	7	8
4	6	9	3
5	0.18	0.41	0.17