you answered my question offering as option U=load(); but unfortunately this doesn't solve my problem.
by using uigetfile I can select the .mat file that contains my structured data. this is good. I have multiple files named, i.e. bending0001, bending0002, bending0003 and so on
to access the data, I'm doing this, for example:
Analog_SG_full = bending0001.Analog.Data(1,:);
as I have multiple files and multiple fields from which I want to extract data, I don't want to type the name bending000X for each access.