how to add on an oscillator

hey
jus i want to know to add this oscillator en metastock v 10.
here the oscillator


Mirazu Oscillator

function preMain() {

setStudyTitle("Mirazu Indicator");
setPriceStudy(false);
setDefaultBarFgColor(Color.red, 1);
setDefaultBarFgColor(Color.blue, 0);

}
var cg_1 = 0;

function main(Length) {
if(Length == null)
Length = 10;

var count = 0;
var num = 0;
var cg;
var temp;
var denom = 0;
var vHigh = getValue("high", 0, -Length);
var vLow = getValue("low", 0, -Length);


if(vHigh == null || vLow == null) {
return;
}

for(count = 0; count < Length - 1; count++) {
num += (1 + count) * ((vHigh[count] + vLow[count])/2);
denom += (vHigh[count] + vLow[count])/2;
}

if(denom != 0)
cg = - num/denom;

temp = cg_1;
if (getBarState() == BARSTATE_NEWBAR)
cg_1 = cg;

return new Array(cg,temp);

}

/*
Inputs: Price((H+L)/2),
Length(10);

Vars: count(0),
Num(0),
Denom(0),
CG(0);
Num=0;
Denom=0;

For count=0 to Length-1 begin
Num=Num+(1+count)*(Price[count]);
Denom=Denom+(Price[count]);
End;

If Denom<>0 then CG=-Num/Denom;

Plot1(CG,"CG");

Plot2(CG[1],"CG1");
*/

This is not metastock language. Unless you convert it, adding is not possible.

hi
rhanks for your reply.but tell me if i can modify it for metastock.
thanks in advance