Forget what Jamba says, does your warlock actually have the mob focused when you press your macro? Enable the focus frame for that toon so you can see yourself.

Second, I don't think target=toon1target is a valid target selector (and I assume toon1 is your lead toon's name in this example):

Code:
/focus [target=toon1target,mod:ctrl]
IIRC, the valid selectors are partyNtarget, partyNtargettarget,partyN,partyNfocus where N is the order they appear in your group window (check wowwikki macro page to be sure). Anyway, they aren't toon names. If you're using a toon's name I think you have to do something like this:

Code:
/target toon1name
/focus
Or if toon1 is always your party lead just do:

Code:
/focus [target=party1target]