Easy Language Error

[magiclaas 10]

hi,

i ve this script:

 

[LegacyColorValue = TRUE];

 

{ ======================================= HEADER ====================================

Poly Inner Channel.

This indicator plots a regression line and two standard deviation bands around it.

 

 

 

====================================== DECLARATIONS ==================================}

 

inputs:

Len (150),

RedLineLen(150),

Order (3),

SDev(.5),{why not make these inputs}

Price ©; {this cannot be a var, for some reason}

 

 

vars:

CURSOR (FALSE),

LASTBAR (TRUE),

sigma (0),

f (0),

Y(0),

b0 (0),

b1 (0),

b2 (0),

b3 (0),

b4 (0);

 

 

VARS:

JLAOK(TRUE),

JLAPASS1(0),

JLAPASS2(0),

JLAPASS3(0),

JLAPASS4(0),

JLAPASS5(0),

JLAPASS6(0);

 

 

{=========================================MAIN PROGRAM ===================================}

 

VALUE98=POLY_COEFFS(price,len,order,CURSOR,LASTBAR,b0,b1,b2,b3,b4);

value97=LinearRegValue( Price, RedLineLen, 0 );

 

if (lastbaronchart and lastbar) or (atcommentarybar and cursor) then

begin

 

sigma= stddev(price,len);

 

y=(len-1);

f=0;

while y>(-2)

begin

 

value5=( b0

+(b1 *f )

+(b2*(power(f, 2)))

+(b3*(power(f, 3)))

+(b4*(power(f, 4)))

);

 

plot1[y] (value5,"regression");

plot2[y] (value5 + (sdev * sigma ),"Channel+1");

plot3[y] (value5 - (sdev * sigma ),"LChannel -1");

plot4[y] (value97[y], "LR Momentum" );

y=y-1;

f=f+1;

end;

end;

 

 

{

commentarycl("b0 = ", b0);

commentarycl("b1 = ", b1);

commentarycl("b2 = ", b2);

commentarycl("b3 = ", b3);

commentarycl("b4 = ", b4);

}

 

.... but plotting it in multicharts i recive this popup:

 

Messagge:Error in study "SIGMA INNER CHANNEL

trying to access future data. Bar reference value:-1.

 

CAN PLEASE ANYBODY HELP ME TO CORRECT THE SCRIPT?

 

thank you very much