Let's follow up this discussion at the Neptune Community
(this forum will be kept in read-only mode)
As of now as part of the valuehelpdialog I can only specify a collective search help but not an elementary search help.
It would be nice to have this feature as well.
thanks for your nice requests. This one has a quick workaround: put your elementary search help inside a new (custom) collective search help.
Will consider the feature of setting a default one !! thanks and talk to you soon. ;)