When attorney fees are based on a written instrument, the original or a true copy of the instrument must be submitted to the court with the requested judgment, unless a true copy is attached to or set out in the pleadings. This rule also applies to reciprocal fees claimed under ORS 20.096. If an original or copy is not available, the court may require proof by affidavit or testimony.
Or. Uni. Trial. Ct. R. 2.050