The ControlID and LicenseKey properties must be set before calling Create method. The Create method creates an ActiveX control given its identifier and its runtime license key, if required. A control identifier, or programmatic identifier, is a registry entry that can be associated with a CLSID. The format of a control identifier is <Vendor>.<Component>.<Version>, separated by periods and with no spaces, as in Word.Document.6. 

For instance, the control's identifier for Microsoft Calendar Control is "MSCAL.Calendar", the control's identifier for Exontrol ExGrid Control is "Exontrol.Grid", and so on.