thanks colion.
Why would this not return any results in an exploration?
filter = result = iif( c > o, ma( (h + L)/l, 15), null);
addcolumn(result,"result");
If you want to do an exploration then use:
Filter = Status( "lastbarinrange" );
result = IIf( C > O, MA( (H + L)/L, 15), Null);
AddColumn(result,"result");
Do the above and then your way to see the difference - good learning experience.