In that case, could I suggest making the question a bit clearer (perhaps s/hacked (.*) system/made $1 system work/ or by giving an example of what you mean)? The fact that I apparently had exactly what you were looking for, yet wasn't sure if it qualified at all, is I think a good indication that the language is ambiguous.
If it had been me doing the application (haven't seen it) I would probably build in some ambiguity. It gives a greater degree of freedom for the applicant, and also in the real world you have to deal with ambiguity on a daily basis, so I would like to see how an applicant deals with it.
