The list of the updated fields's to be separated by comma.

UPDATE WRHMASTER SET WRHMASTER.INVOICED = .T., ;
  WRHMASTER.INVOICENUMBER = TEMPORAIREMENT ;
 WHERE WRHMASTER.IDENT = CURSOR_FACT.IDENT

>there is the code
>
>UPDATE WRHMASTER SET WRHMASTER.INVOICED = .T. AND WRHMASTER.INVOICENUMBER = TEMPORAIREMENT WHERE WRHMASTER.IDENT = CURSOR_FACT.IDENT
>
>
>all the value is ok
>
>why the update doesnt work ?