Robert Krausz's Weekly Balance Step

["First Pacific Securities Pty Ltd" <lvl@xxxx>]

<FONT color=#000000 
size=2>Hello,
 
Can anyone help me with an 
indicator I am trying to program.
 
It is Robert Krausz's Weekly 
Balance Step. It is a five-week moving average of the weekly closes 
(Friday-to-Friday only) and is displayed on a daily chart.
 
I couldn't think of how to 
write it in MS language to use just the weekly Friday close, but came up with 
this:
 
If(( DayOfWeek()=5 ),  
Mov(CLOSE, 22, S) ,  PREVIOUS )  (This is a close 
approximation)
 
Here is what I came upwith for 
Amibroker, but it doesn't function:
 
graph0 =close;graph1 = 
IIF(( Dayofweek()=5 ),ma(CLOSE, 22) ,  PREVIOUS 
);graph0style=4+128;graph0color=36;graph1color=5;graph1style=4+512;
 
There doesn't seem to be a 
PREVIOUS fn available.
 
Can anyone 
help?
 
Thanks,
Larry
 
 
 
 
 
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