Security in Excel Web Part

Hi,

I have uploaded excel worksheet on SharePoint 2013 .i.e Excel Web Access of Excel Services.

I have one User-Name Slicer to slice over currently logged in user names.

then I have connected this Slicer to Current User Filter from Web part N it is working fine. I mean showing only user specific data.

But the problem is the currently logged in User is able to view his data n other user's data also by selecting other users name from Slicers.

So is there solution for this so that we can restrict current user to access other user's data?

Thanks in advance!