[amibroker] What's wrong with this code?

[Ding Li <lasallewashington@xxxxxxxxx>]

Hi, guru's,

I'd like to get highest and lowest value during last 24 bars. But the code below is not working properly. Anyone can see what's wrong with the code? thanks and happy new year！

...

LLL  = ValueWhen(L==LLV(Low,  24),Low,1);

HHH = ValueWhen(H==HHV(High, 24),High,1);

...

D

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