>Fabio,
>
>I basically disagree with your bug assesment, The help file lists this as the correct ordering of the command clauses:
>
>

>REPLACE FieldName1 WITH eExpression1 [ADDITIVE]
>   [, FieldName2 WITH eExpression2 [ADDITIVE]] ... [Scope]
>   [FOR lExpression1] [WHILE lExpression2] [IN nWorkArea | cTableAlias]
>

>
>These all work without error.
>
>

>REPLACE FF WITH 1 WHILE .T.
>REPLACE FF WITH 1 WHILE .NULL.
>REPLACE FF WITH 1 WHILE .F.
>

>

You expand the vision.

CREATE CURSOR bugwhile (ff i,XX I)
* BUG 1
x=CREATEOBJECT("CONTROL")
X.ADDPROPERTY("Y",CREATEOBJECT("EMPTY"))
ADDPROPERTY(X.Y,"Z")
WITH m.x
	REPLACE FF WITH 1 WHILE (.Y.Z)
ENDWITH