Display 0 value on graph in specific range of dates

[MKPartner]

Hello All, 

I know that similar issue was raised couple times but I didn't find solution to my case or I'm not able to tweak my code. 

I'd like to display 0 value on graph when no data are available. I'm calculating PPM measure from Rejected part divided for All parts. When Rejected parts = 0 then nothing appear on graph. I'm trying to use below DAX code to fix it but results isn't sufficient for me: 

PPM12M_v2 = 
VAR MaxDate =
    MAX ( 'DATE_DUP'[WC_Month] )
VAR MinDate =
    DATE ( YEAR ( MaxDate ), MONTH ( MaxDate ) - 12, DAY ( MaxDate ) )
VAR PPM =
    IF(
        ISBLANK((SUMX('PPM returns','PPM returns'[Meters accepted by FE])/SUMX('PPM Despatches','PPM Despatches'[qty]))*1000000),
        0,
        (SUMX('PPM returns','PPM returns'[Meters accepted by FE])/SUMX('PPM Despatches','PPM Despatches'[qty]))*1000000
    )
       
RETURN
    CALCULATE (
        PPM,
        FILTER ( 'COQ Calendar', 'COQ Calendar'[WC_Month] > MinDate && 'COQ Calendar'[WC_Month] <= MaxDate )
    )

Result of above code is below: 

Can you help me to fix it ? 

[amitchandak · Accepted solution]

@MKPartner , if that is blnak and you want make it 0, Try like

0 between range
Measure = var _1= SUM(Opportunity[Opportunity count]) +0
var _min = minx(ALLSELECTED('Calendar'), 'Calendar'[Date])
var _max = maxx(ALLSELECTED('Calendar'), 'Calendar'[Date])
return
CALCULATE(if(max('Calendar'[Date]) <_min || max('Calendar'[Date]) >_max , BLANK(), _1))

[MKPartner]

Thank you for your support. I have tweaked your DAX as below & it works. I didn;t realized to do it by this way. 

PPM12M_v2 = 
var _1= ((SUMX('PPM returns','PPM returns'[Meters accepted by FE])/SUMX('PPM Despatches','PPM Despatches'[qty]))*1000000)+0
var _max = MAX ( 'DATE_DUP'[WC_Month] )
var _min =  DATE ( YEAR ( _max ), MONTH ( _max ) - 12, DAY ( _max ) )

return
CALCULATE(if(max('COQ Calendar'[WC_Month]) <_min || max('COQ Calendar'[WC_Month]) >_max , BLANK(), _1),
        FILTER ( 'COQ Calendar', 'COQ Calendar'[WC_Month] > _min && 'COQ Calendar'[WC_Month] <= _max )
)