formatting of words in a text box.

Dear Friends,

I want to create formatting tool of word (text box) in flash. please help me how can I do? I have created one. but I can do only one time, if I do next option the old format will go. I mean I can select and do bold, if I select another text and do bold the old one will go. any help I can do this formatting pls...

I want to do same as below. bold and italic and color changing...

Thanks in advance,

Syed Abdul Rahim