TLFTextfield support

Dear experts,

I am using Animate CC and trying to use TLFTextfield in my actionscript. Using TLFTextfield is for support the Tamil font on my swf animation file.

But when i tested my script, it gives me the error as following:

Scene 1, Layer 'as', Frame 1, Line 1, Column 15 1172: Definition fl.text:TLFTextField could not be found.

Scene 1, Layer 'as', Frame 1, Line 1, Column 15 1172: Definition fl.text:TLFTextField could not be found.

Scene 1, Layer 'as', Frame 1, Line 3, Column 12 1046: Type was not found or was not a compile-time constant: TLFTextField.

Scene 1, Layer 'as', Frame 1, Line 3, Column 31 1180: Call to a possibly undefined method TLFTextField.

Any idea what's wrong?

Best Regards,

Roger