Custom toolbar for wrap text in Bold - fcodes? or extendscript?

Hi,

I'm replacing the text_formattig toolbar with one that looks the same but instead of adding format overrides, it wraps the selected text with the bold, italic etc elements.

So in text_format.xml I have added, for example>

<ACTION command="WrapBold">

                              <images dark_normal="P_TextBold_18x18_N.png" dark_rollover="P_TextBold_18x18_R.png" normal="P_TextBold_18x18_N_D.png" rollover="P_TextBold_18x18_R_D.png"/>

                    </ACTION>

and in customui.cfg I have>

<Command WrapBold

   <Label WrapBold>

   <KeySequence \!c2b>

   <Definition \xF49 >

   <Mode All>>

This launches the Quick Insert menu, but I'm not sure if I can key down and select b then enter, to wrap with the required element.

Can I combine fcodes to do this? Does anyone know?

or am I better off calling Extendscript from the toolbar instead?

thanks