(Hillsboro, OR)  --  A former employee at the Washington County Jail is to be sentenced next month after pleading guilty to having sex with an inmate.  Thirty-three-year-old Brett Robinson entered the plea yesterday to charges of first-degree custodial sexual misconduct and first-degree official misconduct.  Prosecutors say Robinson and a fellow civilian jail employee, Jill Curry, had sex with the same inmate last spring and summer.  Curry pleaded guilty earlier this year and received a four year sentence.