send a variable

Hi there
In my main movie i load an swf into an mc

code:

---

on (release) {

	loadMovie(link, "_root.mcSamples");

}

---

From the outside swf i wanna send a variable in main movie, i have this one for an dinamic text that work fine(dinamic text is in main movie).

code:

---

_root.mcBig.outText = "this";

---

this script again in outside swf that dont work

code:

---

_global.outLink = "http://www.yahoo.com/";

---

In main movie on first frame i have

code:

---

_global.outlink = "http://www.google.com/";

---

this script on a button in main movie

code:

---

on (release) {

	getURL(_global.outLink, "_blank");

}

---

when i press the button i go to google and script from the outside swf dont work.

i have tryed many other ways but i cant make it work

can u please tell me what am i doing wrong?

Thank you