Clear ComboBox in DCT

Since FormAPI doens’t have a method to clear the first NULL value in the dropdown, this workaround should work

var cmb = IWDatacapture.getItem(“/combo”);
var cmb_options = cmb.getOptions();
if (cmb_options != null) {
for (var i = 0; i<cmb_options.length; i++) {
cmb_options[i].selected = false;
}
cmb.setOptions(cmb_options);
}

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