Dream incubation doesn't work the way you think it does, and it's not reliable. The oneiric processes will manifest the issues, not necessarily in accordance to your intent, but based on associative memory functions. Usually, the problem will be constructed from new, residual information that is combined with old information that is somehow related to it. You can't really predict what will happen, since your predictions will alter the outcome.

Dreams do not occur in order to fulfil your fantasies. You'll be setting yourself up for disappointment if you try to utilize it for that purpose.