In follow example we define a new price for item "RM" in second price list and set new price to 25
declare itemprice=ue_api_sbo
itemprice.getbusinessobject=oitm
// Read item
itemprice.getbykey=RM
// use second price list (0-based)
itemprice.pricelist.setcurrentline=1
itemprice.pricelist.price=25
itemprice.update
destroy=itemprice