>>

>>Select	Pedidos.Codpai				;
>>	,	Pedidos.Codven			;
>>	,	MAX(Maepai.nompai)		;
>>	,	MAX(Maeven.nomven)		;
>>	,	MAX(Pedidos.Valpedmn)		;	&& what is this ?
>>	,	MIN(Pedidos.Fecped)	MinFecped	;
>>	,	MAX(Pedidos.Fecped)	MaxFecped	;
>>	,	SUM(Iif(Month(fecped)=1,valpedmn,0)) As enero	;
>>	,	SUM(Iif(Month(fecped)=2,valpedmn,0)) As Febrero	;
>>	....
>>	,	SUM(Iif(Month(fecped)=12,valpedmn,0)) As diciembre ;
>>Into Cursor (This.lcCursor) ReadWrite	;
>>From Pedidos ;
>>Inner Join Maepai On Pedidos.Codpai=Maepai.Codpai
>>Inner Join Maeven On Pedidos.codven=Maeven.codven ;
>>Where Pedidos.Fecped Between This.Cajafecha1.Value And This.Cajafecha2.Value;	&& replace This.Cajafecha1... and This.Cajafecha2 with variables
>>Group By Pedidos.Codpai,Pedidos.Codven	
>>

>Thanks Fabio, just one question why should I Change This.Cajafecha2.Value with a variable?

Rushmore optimzation is not good with properties.