NR7 narrow range

Algos, strategies, code
1

NR7 script code

2

HeLlO TrAdEr,

NR7 SCRIPT: 

(HIGH-LOW) < (REF(HIGH,1)-REF(LOW,1)) AND 
(HIGH-LOW) < (REF(HIGH,2)-REF(LOW,2)) AND 
(HIGH-LOW) < (REF(HIGH,3)-REF(LOW,3)) AND 
(HIGH-LOW) < (REF(HIGH,4)-REF(LOW,4)) AND 
(HIGH-LOW) < (REF(HIGH,5)-REF(LOW,5)) AND 
(HIGH-LOW) < (REF(HIGH,6)-REF(LOW,6))
3

Find it in the below link:

4

This script used as it is gives error…Any possible reasons?

5