datatable url,save and cols update

i used this ui in page:
`
var ui = {
id: “ui”,
view: “scrollview”,
body:{
rows: [
toolbar,
{
type: “material”,
autoheight:true,
cols:[
recordview
,resizer
,datatable
]
}

	]
}

};
`
datatable must configured later by user other interface.
how i can reconfigure url,save,columns of datatable?
i try this and not response:

`
datatable[‘save’] = “indexdb->org/type” ;
datatable[‘url’] = “indexdb->org/type” ;

datatable[‘columns’] = elements[‘datatable_columns’];
datatable.refresh();
`

https://docs.webix.com/api__link__ui.datatable_define.html
https://docs.webix.com/api__ui.datatable_refreshcolumns.html