Why cant I do bigger font size than 600?

[nexgraphics]

Hi, I am trying to design a banner for a client, that is 20 feet long.
And when I highlight the text and make it 500, 600 pt its fins but as soon as I try and change to 700 or 800, it completely disappears and you cannot see the font.
Why cant I do bigger than 600?

Thanks

Lee

 

[Zeealex]

have you waited a little bit? it could be rendering it up as all. my brush does it at certain sizes.

 

[RTContent]

You can also try to just transform the text instead and see if that works (Ctrl+T).