Macro help - Shadowmeld/Prowl

[Garoun]

Trying to get a macro to do this properly but doesn't seem to want to cooperate.

I tried the normal(example only may not be exactly how my code was)
/script CastSpellByName("Prowl(Rank 1)");
/script CastSpellByName("Shadowmeld");

Now it works fine for being in Cat form up until you want to cancel Prowl :P and then you get the 'Abilitiy is not available' message but have the icon shift that you see when you are in Prowl mode.

I'm assuming I probably need to update it to include checking which form I'm in, any info would be nice, because I'd rather not use up 2 actionbar slots for it.