Be careful - it's "GLOBAL" and "LOCALS". It's easy to stick that extra S in there

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(1)
Possibly highly dodgy information alert! If the last speaker in your CHAIN is not the NPC in question, setting the locals won't work, as the last speaker gets all the scripting actions you put in a CHAIN, due to the way WeiDU interprets a CHAIN. In other words, you have set the locals, but it's just gone to the wrong character.

Make sure the NPC you want the locals set to is the final speaker if you want this to work.
(2) Just make sure you have the pointer over the NPC in question when you hit 'enter'.

But the command is the same [GetGlobal("TheLocalsYouWant","LOCALS") ].