[amibroker] scans on 5 minute bars

[murthysuresh]

Hello
Is it possible for Ami to scan in 5 minute timeframe. I am trying to 
scan on 5 minute bar.. This scan does not return any results at all. 
However i can see the chart making all those highs and lows. i also 
switched the scan to use the current symbol and its not returning 
anything.

TimeFrameSet( in5Minute ); 


Buy=Close>Ref(HHV(Close,20),-1) ;
Sell=Close<Ref(LLV(Close,20),-1) ;
TimeFrameRestore();