BAPI_INQUIRY_CREATEFROMDATA2: Updating pricing time in inquiry

I am using the function module BAPI_INQUIRY_CREATEFROMDATA2 to successfully create an inquiry document in our system. However, we rely on the pricing date and time to access our pricing conditions. I have not yet found a way to update the pricing time in the header of the inquiry through this BAPI. Without this specified, our pricing is incorrect since it is based on the time of day. The BAPISDHD1-PRICE_DATE field fills in the date, but I cannot find a field in this or any of the other structures passed to this func. mod. to update the time. Is there any way to accomplish this?