question about table elements

[Ryan Cresawn <cresawn@...>]

Lua list,

I'm having a difficult time accessing table elements and I would
appreciate some help.  The code below is test code but it behaves the
same way that my larger program does.

-- begin example --

t1 = {
   ["a"] = 1,
   ["b"] = 2,
   ["c"] = 3,
}

t2 = {
   ["x"] = "a",
}

tmp = t2.x
print(tmp)     --> a
print(t1.tmp)  --> nil

-- end example --

How could I achieve the goal of using the value stored in 't2.x' to
access 't1.a'?  I suspect I'm overlooking something simple and would
appreciate any advice you may offer.

Ryan