(735 ILCS 5/12-636) (from Ch. 110, par. 12-636)
    Sec. 12-636. Asserting and defending foreign-money claim.
    (a) A person may assert a claim in a specified foreign money. If a foreign-money claim is not asserted, the claimant makes the claim in United States dollars.
    (b) An opposing party may allege and prove that a claim, in whole or in part, is in a different money than that asserted by the claimant.
    (c) A person may assert a defense, set-off, recoupment, or counterclaim in any money without regard to the money of other claims.
    (d) The determination of the proper money of the claim is a question of law.
(Source: P.A. 86-1291.)