Hi Atul,
Though I don't have VP active in my system but I checked out an existing component VP_VISITPLAN and it looks like the one provided by you.
The internal Genil model behind this component is VP_CMP_SET and it doesn't seem to have any option for text node or component here. Adding the same will add to a lot of complexity onto this requirement, which will need the enhancement of the Genil model for this object because somewhere the system will have to establish a link between the text and the plan, I can't see this linking mechanism available in the system currently for VP.
In short, even if we proceed with adding the component GS_TEXT in VP, nothing will happen or in fact it might give dumps for missing links.
I recommend the option of AET here, if that fulfills your requirement.
/Hasan