[amibroker] Creating a "short" ticker

["onelkm" <LKMCD1@xxxxxxx>]

I want to create a short ticker that is the inverse of QQQQ for 
example. Some of the inverse ETF's that are now available do not have 
much history, so I want to calculate the inverse ticker based on the 
long ticker. Here is what I have so far, but it is not totally 
correct since the open is always higher than the high for the day. 
Any suggestions?
Thanks
Larry

Buy=1;
j = Cum(-(log10(C) - log10(Ref(C, -1))));
k = Cum(-(log10(O) - log10(Ref(O, -1))));
m = Cum(-(log10(H) - log10(Ref(H, -1))));
n = Cum(-(log10(L) - log10(Ref(L, -1))));
jReal = 10 ^ j; 
kReal = 10 ^ k; 
mReal = 10 ^ m; 
nReal = 10 ^ n; 
Plot(jReal,"j",colorWhite,styleLine);
AddToComposite(jReal ,"~qst","C",1+2+8+16); 
AddToComposite(kReal ,"~qst","O",1+2+8+16); 
AddToComposite(mReal ,"~qst","H",1+2+8+16);
AddToComposite(nReal ,"~qst","L",1+2+8+16);  




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