Measure to calculate total sales in the month

[Anonymous]

I want to create a measure that returns the total sales for that month. If there is no month in the context, I want it to return the total sales.

My measure is something like this:

total sales only month = CALCULATE(SUM(scanner_data[Sales_Amount]), FILTER(all(scanner_data), ALLEXCEPT('calendar', 'calendar'[Date])))

But is not working.

[SivaMani]

@Anonymous, Can you share your model diagram and expected output in a screenshot?