Multiply the price by a miscellaneous address field
The price for an item in a document can be multiplied by a value or a factor that is contained in a miscellaneous field of the address of the document.
Example
*/ The field ad_utilis1 must be available. If ad_utilis1 is empty, the value used is 0.
eval(ad_utilis1) * prix()
*/ The field ad_utilis1 must be available. If ad_utilis1 is empty, the value used is 1.
eval(ad_utilis1, 1) * prix()