erase a trendline  [SOLVED]

I use tl_new_bn to draw a new trendline for each new bar with a higher low.
How can I erase the older intermediate trendlines, so that my historical chart will keep only the the last trend lines that respect the condition?

I use tl_new_bn to draw a new trendline for each new bar with a higher low.
How can I erase the older intermediate trendlines, so that my historical chart will keep only the the last trend lines that respect the condition?

Code: Select all

vars:tlup(L);

condition1=L>L[1];

if condition1 then begin
tlup=tl_new_bn(barnumber-1,L[1],barnumber+1,2*L-L[1]);
end;

Look up

TL_Delete