Hello community, I am trying to build a bootstrap multi selector for my app. I havechosen some values from my selector but when I clicked “save” button I got the following error message: Cannot read property 'get' of null TypeError: Cannot read property 'get' of null at C.<computed>.j.<anonymous> (http://localhost:8080/widgets/BootstrapMultiSelectForMendix/widget/BootstrapMultiSelect.js?637535813211899666:608:117) at http://localhost:8080/mxclientsystem/mxui/mxui.js?637535813211899666:5:27215 at C (http://localhost:8080/mxclientsystem/mxui/mxui.js?637535813211899666:5:210591) at http://localhost:8080/mxclientsystem/mxui/mxui.js?637535813211899666:5:216152 it seems that the bootstrap Multi Select wasn’t correctly recognized. In the Bootstrap multi selector GitHub page there are some examples. But these examples only show how to integrate the multi selector into the page. They don’t show how to store and reuse/display the selected values after they are selected. It would be appreciated if examples are provided. Thank you very much in advance!