State tax filing

This situation is similar to mine (except I have to file a MA state return to get my refund).  My question is how do I address the incorrect W2 state wage amount in filing the state return in TurboTax?  My W2 state wages are all allotted as if they were from MA as the source state regardless of the 10-year distribution period.  Is there the ability to correct a W2 form in TurboTax?