st: foreach syntax

The following works in Stata9:
local x =3D"lr1-ul6"
foreach i of local x{
su `i'
}

but
local x =3D"lr1-ul6"
foreach i of local x{
ttest `i',by(gender)
}

with error r(103) too many variables specified.
Could somebody please tell me what I am doing wrong.

I can't believe that either example could be considered correct syntax. What does your local statement mean? I don't know how to interpret =3D"lr1-ul6".

Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html

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