Please, help me with this loop

I want to achieve this:

% Refine mesh four times and run the code
model.mesh('mesh1').feature.create('ref1', 'Refine');
model.mesh('mesh1').feature.create('ref2', 'Refine');
model.mesh('mesh1').feature.create('ref3', 'Refine');
model.mesh('mesh1').feature.create('ref4', 'Refine');
model.mesh('mesh1').run('ftri1');

I am using the code below, but it is not running

% Refine mesh four times and run the code
n =4
for k = 1:n
    ref{k} = ['ref', num2str(k)];
end

for k = 1:n
     model.mesh('mesh1').feature.create('ref{k}', 'Refine');
end
model.mesh('mesh1').run('ftri1');

Please, what am I doing wrong? Perhaps, I cannot achieve my goal using the code below, please, help me modify it. Thank you.

Answer 1

[Walter Roberson]

       model.mesh('mesh1').feature.create(ref{k}, 'Refine');