Horizontal Line that Follows Zig Zag

In Sierra, I'd like to have the Horizontal Line follow the Zig Zag Highs and Lows.

E.G. If the market price action is dropping and the TF has just dropped to a HL or LL of say 1179.8, then the Horizontal Line (ALT-8) drops to a corresponding level above the HL or LL. In the example, I'd like to see the Horizontal Line 20-tics above the HL or LL or at 1181.8.

If the Price Action dropped lower, then the Horizontal Line would drop a corresponding amount.

If the Price Action were to rise and go through the Horizontal Line and create a LH or HH condition, then the Horizontal Line would adjust to the new LH or HH.

Is this something that can be done?

Thanks
JD
Cary, North Carolina