I use this component in to version v.3.5 and Version: 4.2.
Whene I use setComboValue in v.3.5
var z_ugroup = new dhtmlXCombo("ugroup_id", "ugroup_id", 350);
z_ugroup.enableFilteringMode(true, "?action=ajax/group/xml", true, false);
z_ugroup.disableAutocomplete();
z_ugroup.setComboText(<?="'".$name."'"; ?>);
z_ugroup.setComboValue("<?=$ugroup->id; ?>");
value set in hidden input and it works.
But in version 4.2 setComboValue - set null in hidden input.
I think, that befor user input chars from keyboard combo not load list…
And question - is it normal for new version not set value by force with setComboValue?
How set option value default, before Filtering?