[R] putting a column name on a zoo object

[Leeds, Mark (IED)]

does anyone know how to put a column name on a zoo object. I think achim
and gabor are off line or they have gotten totally tired of me 
an decided to ignore me ( which is totalyy understandable ).

logbidask<-log((aggfxdata[,"bid"] + aggfxdata[,"ask"])/2.0)
logbidask doesn't have a name and I can't figure out how to get one on
it ?

aggfxdata is a zoo object.
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This is not an offer (or solicitation of an offer) to buy/se...{{dropped}}