load data in a combo box

Hi, I have this code,
https://snippet.webix.com/66kr4wcz
And my combo box doesn´t show data, maybe I call bad my data at the line 44, please help

combo is working as expected.
but you have wrong command at line 79

this.$$("zonesComboBox").load(col, "json");

to load data into combo, you need to address its list

this.$$("zonesComboBox").getList().load($url, "json");
OR
this.$$("zonesComboBox").getList().parse($data, "json");

Hi @intregal, thank for the help, but now I have a problem with the view of the combo, it appears behind the map, so I can’t select a value because I can’t see what I selected.
Here is the code.
https://snippet.webix.com/gb09anc6

as a workaround you can use this

webix.env.zIndexBase = 1100;

AFAICS openMap is using zIndex for positioning with max value 1000
https://snippet.webix.com/b2o0zkw6
but you need to use it in the main script, at the very beginning.