Accumulated month to month

[Anonymous]

Hey guys, I have a question about how to make a monthly accrual by Categories and Data. I am using a DAX measure to generate these values, which so far works well, but when filter data finds no values ​​in the month, or accumulated also returns a value of Blank, where the correct period was to sum or accumulated until the last month. with 0 (zero). Would it be possible to create a condition that causes, when the month filter returns a value of Blank, a measure fetching the last NONBLANK value and adding to 0 (Zero), or something like that? Can anyone give a Light? Thank you very much in advance. Attached are images of the Problem.