Button to reset multi-value combobox

I have a multi-value combo box for a field that uses a lookup list for it’s values. I would like to create a button to clear all selections in that combo box. I’ve looked all over the place and the common answer seems to be variances of the codes below for the On Click event, but they don’t work; I’m assuming this may be due in part to the fact that the combo box is linked to a lookup field.

Things that have not worked:

Me.myComboBox = Null

myComboBox.Text = Null

myComboBox.Text = “”

myComboBox.SelectedIndex = -1

myComboBox.Value = “”

Me.myComboBox.Value = Null

submitted by /u/bskelactica
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