# MATLAB: Problem with code

eval structure field

I am trying a script that does not work. First I define a structure in matlab:
>> package=struct('item_no',123,'cost',19.99,'price',39.95,'code','g')
package =
    item_no: 123       cost: 19.9900      price: 39.9500       code: 'g'
then I have made a script who will try to find out the value of a field in the structure:
 inputfield=input('Which field would you like to see: ','s') if isfield(package, inputfield)     fprintf('The value of the %s field is: %c\n',inputfield,...     eval(['package.'inputfield])) else     fprintf('Error: %s is not valid field\n', inputfield) end
but i get error message:
>> structurevalue ??? Error: File: structurevalue.m Line: 6 Column: 22 Unexpected MATLAB expression.

eval(['package.'  inputfield])