Filter Data In Table App Designer

I am trying to create a all back so that when I add a value to an edit field and push a button, only certain data displays from my data table. It is not filtering. Please help. I am new to MATLAB. Thank you!

t = readtable('us-states.xlsx');

app.UITable.Data = t;

Filter = app.FIPSIDEditField.Value;

numRows = size (app.t,1);

k=1;

for i = 1:numRows

if app.UITable.Data{i,4} == Filter

RowstoDel(1,k) = i;

k = k + 1;

end

end