Okla. Stat. tit. 43, § 43-601-303: Application of law of this state

Except as otherwise provided in this act, a responding tribunal

of this state shall:

1. Apply the procedural and substantive law generally

applicable to similar proceedings originating in this state and may

exercise all powers and provide all remedies available in those

proceedings; and

2. Determine the duty of support and the amount payable in

accordance with the law and support guidelines of this state.