CorelDraw X5 Student not showing unicode in text, how do I correct this?

Using CorelDraw Home & Student X5

I want to use unicode characters (mathematical etc)

Under 'insert text symbol' I can manually search for things like Sigma (mathematical) but it shows no unicode or ascii shortcut for this.

Unicode should be 03A3 (0931 ASCII), but I cannot enter the relevant number using Alt x x x.

I can do so for other characters, but nothing beyond basic ansi,

Under 'insert text symbol' the only code pages listed are all ansi - no ascii codes or unicode.

Am I missing something?