copyfile error 'No matching files were found'

I am having a problem with copyfile giving the error 'no matching files were found'. I appreciate this is a commonly asked question but I just can't seem to find an answer that works for my code

The code is:

pathin =['D:\data'];
pathout =['D:\VB_data\stc'];
subjects = ["example1" "example2" "example3"];

for subj = subjects
    source= strcat(pathin,'/',subj,'/',subj,'/','*RS_HF','/*.dcm')
    target=strcat(pathout,'/', subj)
    copyfile(source, target)
end
    

The paths are correct, with dir(source) giving the list of files I want to copy and exist(target) > 0.

Thanks

[Jos (10584)]

You appear to mix / and \ symbols to create a path ...

I suggest you use FULLFILE rather than strcat to concatenate folders into a full path to a file.

[Walter Roberson]

Is subjects a string array or is it a cell array of character vectors? If it is a cell array then you would be building a cell array and copyfile cannot handle a cell array.