I cant upload the file as it is trusted, but i try to explain it:

On worksheet dashboard i have on cell E1 a combobox that is listing 3 values. When changing the combobox value the data behind will change automatically. What i try to do is create a combobox in a userform VBA that is getting the values of the combobox in cell E1 and when picking one of those values updating the value of E1 with the selected value.