I solved this problem by myself, But I Write down the code for people who interested in this problem :

Num_string = get(handles.Num , 'String' );

Num = zeros(1 , length(Num_string));

Sstring= "";

q=0;

for j = 1 : length(Num_string)

if Num_string(j) ==','

q = q+1;

end

end

k = 1;

Num = zeros(1 , q);

for j = 1 : q

while ( Num_string(k) ~= ',' )

Sstring = Sstring + Num_string(k);

k = k+1;

end

Num(j) = str2double(Sstring);

k = k+1;

Sstring= "";

end