Saying "That's exactly what I meant"

Question

One of the things I struggle the most sometimes is finding an expression in Japanese that equals to the one I'm used to use in English.

In this case, I was talking in english to this girl and she transcribed what I said to Japanese, and I wanted to say "That's exactly what I meant".

I feel like そうだよ is a bit vague in this case, so I came up with:

僕はそれって意味しましたね

but now I have this gut feeling that I'm using Japanese to express an english expression, therefore she'll maybe not understand it.

So, is there a better way to put it?

Answer 1

It depends on the situation but you could say:

まさにそれ - exactly that!!

or

それを言おうと思った - that's what I meant to say

Answer 2

僕はそれって意味しましたね

is incorrect. I'd suggest sticking to「そうだよ」「そう、それ」「それそれ！」「そうそう、それ」「そうそう」and the likes. These are all common phrases that basically mean the same thing. Note that they are all pretty casual and informal.

The closest thing to what you were trying to say which was a little more formal　might sound like

「それを言いたかったんです」 That's what I wanted to say.

or

「僕はそう言う意味で言いました」That is what I meant when I said that.

These are a little bit less natural in a casual conversation though.