Quite simple fact : Form_load is called _before_ Form is loaded to video memory (ie shown to screen). So, even if you fill your label's caption, and call form.refresh, it doesn't work at all.
To solve your problem, put Automation into Form_Activate, called _after_ screen loading... I've searched a lot of time before finding that. In fact we can catch screen events with a Windows messages monitor program to see that a form doesn't exist in memory between the end of the load event and the beginning of Initialize (or Activate) event. WM_REPAINT message is sent immediately after loading.

I've found it trying to set focus onto a textbox in a Form_Load. I got error 91 : object no defined... I was puzzled, and after testing, I realized that Windows needs to load completely a form before we can access its elements.