Neb. Rev. Stat. § 76-1013

At any time within three months after any sale of property under a trust deed, as hereinabove provided, an action may be commenced to recover the balance due upon the obligation for which the trust deed was given as security, and in such action the complaint shall set forth the entire amount of the indebtedness which was secured by such trust deed and the amount for which such property was sold and the fair market value thereof at the date of sale, together with interest on such indebtedness from the date of sale, the costs and expenses of exercising the power of sale and of the sale. Before rendering judgment, the court shall find the fair market value at the date of sale of the property sold. The court shall not render judgment for more than the amount by which the amount of the indebtedness with interest and the costs and expenses of sale, including trustee's fees, exceeds the fair market value of the property or interest therein sold as of the date of the sale, and in no event shall the amount of said judgment, exclusive of interest from the date of sale, exceed the difference between the amount for which the property was sold and the entire amount of the indebtedness secured thereby, including said costs and expenses of sale.