Expression Edits

[NavinReddy]

Hi All,

i want to display 3 months values trend using below expression and variables, i tried with below expression im getting "0" value, Any expression Suggestions. 

variables:

MonthName(Date) as Metric_Month

vMaxDate=monthname(addmonths(max(Date),0))
vMaxDate2=monthname(addmonths(max(Date),-2))

Expression:

=Count(DISTINCT{<Month=,Metric_Month={">=$(=vMaxDate)<=$(=vMaxDate2)"}>}value_id)

Thanks & Regards,

NR

[NavinReddy]

Thanks a lot @MK_QSL  and @Taoufiq_Zarra  its working fine