Bold text in text box via expression

[GrantBooth]

I'm trying to convert part of a text box to bold through an expression.

What I am trying to achieve is this

Episode I

The Phantom Menace

Turmoil has engulfed the Galactic Republic. The taxation of trade routes to outlying star systems is in dispute.

Looking through these forums it's been suggested I do the following

'<B>'&'Episode I'&'</B>'&chr(13)&chr(13)&

'The Phantom Menace'&chr(13)&chr(13)&

'Turmoil has engulfed the Galactic Republic. The taxation of trade routes to outlying star systems is in dispute.'

or

'<b>'&'Episode I'&'</b>'&chr(13)&chr(13)&

'The Phantom Menace'&chr(13)&chr(13)&

'Turmoil has engulfed the Galactic Republic. The taxation of trade routes to outlying star systems is in dispute.'

Both of these methods have resulted in the <b> symbol showing as part of the text, I have also tried removing ''  from the modifier. Could someone please let me know where I'm going wrong?

[Digvijay_Singh]

Any reason you are using expression for this? if its a hardcoded text, you may directly type in the text box and make the text bold whereever you want, looks like I am missing the actual need here - 

[GrantBooth]

Good question. It needs to be in the expression because the text box will change depending on the month selected.