Can we achieve the same requirement without the help of parameter.
Somehow my business is not agreeing for Month as a parameter ( because Month should display relevant values accordingly to year which we cannot retrieve in Parameters dynamically ).
Both my filters Year and Month to be taken as Normal Filters only not parameters.
If I'm not wrong as per your requirement user will select year and month (you've mentioned 2016 and Aug) based on the selection graph will show weekly trends of last 3 months. If you don't use parameters then how could you pass these value to filter the data? If you don't want to use parameters then using cascade filter you've to manually filter last three months from the drop down. Let me know If you've any question.