It can be done with a simple LUA plugin.
You´ll have to iterate through all sequences and all cues in those sequences. The (untested!) code could be something like this:
function FindCue()
local obj=gma.show.getobj
local cuename=gma.textinput('Cue name')
if not cueneme then return end
for seq=1,999 do
local hseq=obj.handle('Sequence '..seq)
if hseq then
for cue=1, obj.amount(hseq) do
local hcue=obj.child(hseq,cue)
if obj.label(hcue)==cuename then
gma.feedback('Sequence '..seq..', Cue '..obj.number(hcue))
end
end
end
end
end
return FindCue
Aart