Count from the month before selection

[Anonymous]

Trying to show the volume of feedback received in the month previous to the one that is selected via a filter pane. Eg if September '17 is selected I would like the volume of feedback from August '17. Currently the following is not working;

Count({1<Feedback_Day_Start = {">=$(=monthstart(addmonths(max(Feedback_Day_Start), -1)))"},

Feedback_Day_Start = {"<=$(=monthend(addmonths(max(Feedback_Day_Start), -1)))"}>} FeedbackFlag)

[shraddha_g]

Try

Count ({<Feedback_Day_Start ={">=$(=monthstart(addmonths(max(Feedback_Day_Start),-1))) <=$(=monthend(addmonths(max(Feedback_Day_Start),-1)))"}>}  FeedbackFlag)

[Anonymous]

Yes I did try combining them into a single set but it returns '0' for each value which i know not to be the case.

[shraddha_g]

If possible share sample app n sample data