Masking Font Issue

So I've done this before, but for some reason it's giving me problems. I know you have to embed a font in order to mask a dynamic text (or one created in AS), and I've done that but for some reason my code doesn't seem to be working. I'll attach it and maybe someone can easily see and point out the stupid mistake I must've made. But as you can see, when you don't set the mask, the box I've created clearly only covers half the text, but when I set mask, the whole text is still visible. Anyways, I've created a font in my library, called it Helv and gave it a linkage identifier of "Helv", so my embed font is working fine. Not sure what else it could be, but here's the code: