Exploration with Directional Movement Index

[Dan Cash <dcash@xxxxxxxxxxxx>]

List,

I want to do an exploration with Directional Movement Index.  I want to
scan for the crossing of the two, i.e., yesterday +DX is less than -DX,
today +DX is greater than -DX and visa versa.

Here is what I have and it doesn't work:

Ref(+DX(14),0) > Ref(-DX(14),0)
 AND Ref(+DX(14),-1) < Ref(-DX(14),-1)

This logic impaired individual would appreciate assistance.  I would
also really appreciate some explaination of the logic because I really
don't comprehend!

Thanks,

Dan