Convert from Table to Array

I have created a variable ScanIndex which is a table. It also the column names since it is exported from .csv file.

Now I want to convert this table into double, which should ideally be done by table2array.

But I am getting an error : Unable to use a value of type cell as an index.

Here ind2 = 4 because I have four .csv files but that is not the problem.

%% scanindex
z7Bcolnames.scanindex = z7Bcol_names(contains(z7Bcol_names,'ScanIndex'));

dynamicHostData(ind2).ScanIndex(:,z7Bcolnames.scanindex) = z7Bdata(ind2).matfiletable(:,z7Bcolnames.scanindex);
dynamicHostData(ind2).ScanIndex =  table2array(dynamicHostData(ind2).ScanIndex(:,1));

[Eric Sofen]

It would be helpful to have the data and reproductions steps in order to figure out where things are going wrong.

One thing to check: The ScanIndex table variable contains a cell array of tables. Make sure that the thing being passed to table2array is in fact a table and not a cell containing a table. You may need {} indexing at the lowest level to pull out the 869x1 table.