Powershell ComboBox Selection

Morning All,
I am trying to use a Combobox to select three options.
The first option hides a Labal & txtbox - The Second & Third show the Label & Textbox.
I am currently having problems getting the code to work.

If cboSpecialHandling.Text -eq "None") {$lbl.visible = $False}
If cboSpecialHandling.Text -eq "Bob") {$lbl.visible = $True}

The above works but I have to click the Combobox twice.

I have tried the SelectedItemChanged and get nothing.

Can anyone advise?

Here is how we use the boolean assuming ‘none’ is the first item in your combobox.

$label1.Visible = ($combobox1.SelectedIndex -gt 0)