How to Insert the Text in Selected Text Frame-Reg.

Dear all,

I am using the SnipperRunner - SDK, and create the TextFrame, but I can't insert the Text in the Particular Frame. so please give me the soultions,

(*) Create TextFrame is ok,
(*) Select TextFrame is also ok,
(*) now, my Query ->

How to Insert the Text in the Selected Frame?. (or)
How to Link the Selectable Frame and my Text.? (or)
How come to know the TextFrame is select?.

Please any one can suggest me through the Coding....I will appreciate you...

Thanks & Regards,
T.R.Harihara SudhaN