access data in a data structure

I am trying to access data in a data structure so I can plot the data. I tried this:

 gain_AZ0_Fmid=cell2mat({dataOut_aeCalTable{1}{1}{4}( ceil( length( frequencyList ) / 2 ), 1, :)}) ;

I still get and output that looks like this:

 Val(:,:,1) = 2.2

How do I get the data into a form I can use it to make a plot?

[Niels]

lools pretty much like your variable is rather a cell array than a structure You dont need cell2mat. Get access to a cell array with {}. But you should know since you are working with a table (containing string arrays? Tripple {}{}{} + cell2mat saved cells in cells in cells?). If possible, can you save your variable dataout_aeC... and upload? + the outer 2 brackets and cell2mat are useless. Delete them