[amibroker] RT scan help

["sailis20" <sailis20@xxxxxxxxx>]

Hi All
Iam trying to code a 3 days high for buy and 3 days low for sellwith 
5min Rt scan checked .Can any one guide me to correct this following 
code
TimeFrameSet(in15Minute);
Sell=Cross(C,LLV(L,3))AND MA(C,15)> MA(C,20);
Buy=Cross(C,HHV(H,3))AND MA(C,15)< MA(C,20);
TimeFrameRestore();
AlertIf(Buy,"BUY",FullName(),1);
AlertIf(Sell,"SHORT",FullName(),2);

Regards

Selvi








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