>when I say:
>lcAlias = Alias()
>
>and then I want to refer one of the fields like:
>
>lcAlias.field3 && but this doesn't work
>
>How do I say this?

Either:

&lcAlias..field3

or if name resolution can be used in its place:

(lcAlias + '.field3')

or if a single resolution of the value of the expression needs to be referenced:

EVAL(lcAlias + '.field3')