How can I provide dependend files

Hello community,
I am a new user of snapcraft and snaps in general. So please excuse me if my question is way to simple.
Sadly I was not able to find the correct part in the documentations.
I was able to create my first snap with my own application. This application depends on a .json and .zip file.
When I start my application it can only find the depended files, if my active path contains those files. If I run the command somewhere else, it does not work.
So my question is:
How can I provide these files at all time, independent of the active path where the command is set?

I tried to copy those files into the bin-folder but this did not help.
Thank you very much in advance.