For LTSpice, you may need some additional parameters which can be added at the end. For BJTs, these are Vceo=, Icrating= and mfg=. I'm not exactly sure what the corresponding parameters for FETs are, but you can check standard.fet to get an idea - the values are merely placeholders that are used by the menu system and the rule-checker of LTSpice; they're not used by the simulation engine at all.