browse button - navigating to another branch

System

I'm having some trouble with the <browser> element.

I have
<item name="XYZ">
<browser required="t" extns=".html" initial-dir="/" size="30"/>
</item>

I'm not able to navigate to select a html file in another branch. The 'Select asset' window only lists files within the current branch I am in.

I tried initial-dir="", no initial-dir etc. but nothing seems to work.

Any ideas?

Thanks
Saravanan