u learned how-to make indicator... well done
now next task is learn how-to use top right site search box - on every site page!
just key in "custom" and be amazed ;)
even... use MetaEditor navigator (ctrl-D) > click Search tab > key in "custom" ... hey presto u see within 1st 10 lines wat u after - simple!
use iCustom() in EA.
Value you want to retrieve must be one (or more) of the indicator indexes.