dynamically highlight a row (as if clicked on - Dark Blue)

Hi,

After spending well over an hour searching the forum and trying several methods... i'm still struggling to do the following :

Highlight any row (in dark blue) once the form has loaded.

i've tried many methods, the latest :

obj.setproperty("selection/index", varrow);
'varrow is my variable row number field passed in earlier'

However, nothing highlights.

I require the row to highlight as if clicked, so that when a user selects another row, it will un-highlight etc etc...

Thanks in advance..