Html
<input data-binding="GID" data-source="Person" data-val="False" data-val-required="The GID field is required." id="GID" name="GID" type="hidden" value="502fd4a3-1a3e-4219-a16e-8c8be295771e" />
I am using following Regular expression to extract this GID :
input name="GID" type="hidden" value="([^"]+?)"
But this seems not working and I am getting Default value always.