how to get wavelet transform using wavedec function

hi ..

I need help in applying 1d wavedec function on dats and dats_b

My code looks like this

save([resultfolder '\' num2str(Signal) '.mat'], 'dats_orig', 'dats', 'dats_orig_b', 'dats_b');

I want to do wavelet transform on all the dats and dats_b but there is something wrong that I am doing. please help.

my code

save([resultfolder '\' num2str(Signal) '.mat'], 'dats_orig', 'dats', 'dats_orig_b', 'dats_b'); 

dwtmode('per'); 
Data_edited=wavedec(dats, wavelet='db2', levels=inf, length=None); 
Data_edited_b=wavedec(dats_b, wavelet='db2', levels=inf, length=None);

please advise: