Is it possible to UPDATE a temporary table

Hi folks,

I have a temporary table that I've successfully inserted records into using INSERT.  Now I'm trying to perform an update like this;

UPDATE "#RECEIPTS" SET QTY = 1000 WHERE QTY = 1001

or

UPDATE #RECEIPTS SET QTY = 1000 WHERE QTY = 1001

Neither works.  I get error 'feature not supported: #RECEIPTS'

Is it not possible to perform UPDATES into a temporary table in HANA?  Also I have given _SYS_REPO update privilege for my schema with 'grantable'.  ;o)

Thanks!

-Patrick