Assuming getform is required, the following result was found.
} // update the fields (that were blank on the existing record - but now pulled from Opp or from set values) ZDK.Page.getForm().setValues({ 'Rate_Year_1_0': v_DealRate0 }); ZDK.Page.getForm().setValues({ 'Rate_Year_1_5': v_DealRate1 });...