I need to create a Word macro/vba script to display text to the right of a form field if a particular field value is select from the list of values. I currently have a script (Dropdown8 is a combo box, Text22 is a text box) that works (below), but only changes the text if, after changing the value in Dropdown8, you tab to another field and then reselect it a second time. Can someone help me to figure out what to do so that it(Text22) is updated each time the value in Dropdown8 is changed?

Sub Dropdown8_Click()
If ActiveDocument.FormFields("Dropdown8").Result = "Ogallala" Then 
ActiveDocument.FormFields("Text22").Result = "SAR Model Needed"
Else
ActiveDocument.FormFields("Text22").Result = " "
End If