Populating text to a textbox from a listbox multiline in sequence.

Hi

I have an issue with a listbox filling a textbox with sequential text, I will explain.

I have a listbox "lstitems" and a textbox "Desc.text" The code below is to copy text from the listbox to the textbox in order, lets say i have 10 rows of text in the list box, when i click on a row it populates into the textbox, i would then choose another row and it then will follow the previous, that works fine, what i am trying to do is start a new line in the textbox to start another paragraph, when i hit ctrl+enter it moves down to start another line but when i click on text within the listbox the text populates back to the previous position.

I have attached a sample file.