[amibroker] StaticVarSet Problem

["yadavrahull" <yadavrahull@xxxxxxxxx>]

I am trying to write BUY/SELL to output text file using below formula.
BUY output is writing repeatedly to text file. Say on current 5 minute
bar buy signal generated. Using LastValue(Buy) function it's writing
buy output text to repeatedly for that current 5 minute candle. It
should write buy signal once not repeatedly. I don't know how to use
StaticVarSet for this purpose. Can anyone help me with following code.

fh = fopen( "1FUTUREBUY.text", "a"); 
if( LastValue( Buy )) 
{ 
fputs("[1,FUTURE,BUY]", fh );
fclose(fh);
 
} 
else 
{ 
printf("Error opening file"); 
fclose(fh);
} 







fh = fopen( "1FUTURESELL.text", "a"); 
if( LastValue( Sell)) 
{ 
fputs("[1,FUTURE,SELL]", fh );
fclose(fh);
 
} 
else 
{ 
printf("Error opening file"); 
fclose(fh);
} 






 




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