MATLAB: Assignment syntax on LHS of expression

uigetfilewhile loop

I asked a similar question before about batch processing of files. However, it seems like Matlab’s built in functionality for this won’t work in my situation because the files are not sequentially numbered. If one file is open, I would do:
[filename1, filepath1]=uigetfile
For 2 files:
[filename1, filepath1]=uigetfile
[filename2, filepath2]=uigetfile
To automate this, the user specifies how many files will be opened in a dialog box (answer stored as i).
I am trying to use a while loop:
j=1;
while i~=0
n=num2str(i);
[strcat(filename,n), strcat(filepath,n)]=uigetfile
j=j+1;
i=i-1;
However, this is not the correct syntax, but it illustrates what I am going for. I need to do it this way so I can preserve the actual file names for use in data labeling.