Issues with lua_tonumber

[EddieRingle]

I've just recently ran into this rather annoying issue, and it has basically halted any further progress on my engine.

In my lua script, I set a variable x to equal a value:

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x = 3

Then, in C/C++, I try to access that value:

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lua_getglobal(m_luaState, "x")
g_console->WriteLine("x: %d", lua_tonumber(m_luaState, -1));

And the output is this:

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x: -16

I can easily remedy this by using lua_tointeger (which returns the correct value). However, tolua makes use of tonumber in it's conversions, so when converting numeric members of my userdata, it returns bad values.
Any ideas?

EDIT: Disregard this. I had -Wno-format set so I wasn't warned about using %d in my WriteLine call when I should've been using %f.