Slicer not showing more than 12 months data

[techstyle20]

Hello All,

I am having an issue with my slicer.

I have appended one months more data (January) to the end of a table but the slicer that is based on it will not show any more data past the end of December.

Previous months worked fine but it does not seem to recognise that there is more data in there tis month. I have checked to table and it is definitely selecting all data when I select the table tame in the 'Name Box'.

The slicer is pointing to a date column "Modified" in the table.

Any help would be greatly appreciated!

 

[techstyle20]

I think I now know what the issue is but I don't know how to rectify it.

My slicer I divided into months Jan - Dec and it is adding my Jan 2017 to me Jan 2016 data. how do stop this happening as I want a 13 month range for the charts?