I could never fully get this to completely work but the closest I came was with this code.
function appendFilterPane(parent){
var app=qlik.currApp();
var listbox1=app.visualization.create('listbox',["FieldName1"],{"showTitles": false,"title": "Label1","showDetails":true});
var listbox2=app.visualization.create('listbox',["FieldName2"],{"showTitles": false,"title": "Label2","showDetails":true});
var listbox3=app.visualization.create('listbox',["FieldName3"],{"showTitles": true,"title": "Label3","showDetails":true});
Promise.all([listbox1,listbox2,listbox3]).then(function(data) {
app.visualization.create('filterpane', null,{}).then(function(container){
for (var i = 0; i < data.length; i++) {
data[i].model.getProperties().then(function(child) {
container.model.createChild(child);
});
}
container.show(parent);
});
});
}
