For those curious, a workaround is to reverse your command and character parameters, and look for the command name as a string parameter.

Here's my command to add my wand item to the GUIDSTRING target of the command:
Code
IF
TextEventSet(_Event)
AND
GetTextEventParamString(1, "LLNWIZ_AddWand") // What was formerly the text event name
AND
GetTextEventParamUUID(1, _Target)
THEN
ItemTemplateAddTo("WPN_LLNWIZ_Wand_Renamer_0a65dc24-7785-48af-8266-9b5b55f6c683", _Target, 1);

Example Usage:
Code
oe CHARACTERGUID_S_GLO_CharacterCreationDummy_001_da072fe7-fdd5-42ae-9139-8bd4b9fca406 LLNWIZ_AddWand

LaughingLeader's DOS2 Mods