You need a script that by buffer will point to the requested word.

Shortly disappointed by this freelancer, a simple thing I couldn't do, for me it's not unfortunate 875 pounds but unfortunate time I lost 3-4 days(

At first everything was going as it was right. After implementing the decision that was required, it turned out that it was required to be done differently. The customer said he would not make a decision in the format that was implemented, but then it was like they found a compromise and have already started to fix something.
As a result, the software works on my side, plus the arbitration was connected, the administration also checked the software's functionality - and they all worked. Per there were some other nuances on the customer’s side, which caused the program not to work, but he decided it was easier to refuse to perform at all.
Sorry, I don’t like unfinished projects, just somehow it didn’t happen with us.
To the future you will more clearly form a task, with the indication of all the conditions.