ComboBox's HIGHLIGHTED ROW to TRIGGER Sub

Hello,

My "CmbBx_TaskCODE" selection triggers the Sub "TxtBx_TaskDESCRIPTION_Change". It actually does the job.
Now, I also want that before selection is made, when the cursor is over each individual row, the cursor position can trigger the same "TxtBx_TaskDESCRIPTION_Change"

Would it be possible. I have being exploring some control's events without luck.

Any suggestions?

I have attached a copy of my project.

Thank you.