What I want is if the radio button (named "VolorInvol") is selected, it
performs the formula in the cell, if the radio button is not marked I want
the cell to be blank. Here's my code but it doesn't work, what am I doing
wrong?

There are several other radio buttons in this same group so a checkbox won't
work for this situation.

Private Sub VolorInvol_Click()
If VolorInvol.Value = True Then
Range("B14").Formula = "=DATE(YEAR(EVENT),MONTH(EVENT)+1,0)"
Else
Range("B14").Value = ""
End If
End Sub