Select a time range then measure the month according to the time range what should I do?

[zjc957875211]

like  I choose  05/01/2017  -  09/01/2017

   measure   will show  5 6 7 8 9 this  five months

[Anil_Babu_Samineni]

Then Give a shot

Sum({<DateField = {">=$(=StartVar)<=$(=EndVar)"}>} Measure)