I'm new to Visual CE and can't seem to create an expression for a calculated field that will return the desired result. I'm trying to create samalian's formula to calculate log volumes in the field. (forestry application). The formula looks like this:

Top (squared) + Butt(squared) X log length x .000157

A fairly simple formula but I can't seem to create an expression that works. Can anyone help me with this? Thanks in advance

Hutch