Neb. Rev. Stat. §§ 25-1047
When an order is made discharging an attachment and any party affected thereby shall except to such order, the court or judge shall thereupon fix a time, not exceeding twenty days thereafter, within which such party may file his petition in error or perfect an appeal from such order during which time the attached property shall remain in the hands of the sheriff or other officer; Provided, no such appeal or petition in error shall operate to supersede such order unless such appellant or plaintiff in error shall, within the time so fixed, execute to the adverse party an undertaking, with sureties to be approved by the clerk or judge and conditioned for the payment of all damage which may be sustained by such adverse party, in consequence of such appeal or petition in error, in the event that such attachment be finally discharged as having been unlawfully issued.
Neb. Rev. Stat. §§ 25-1047