How to update stavaluesN columns in pg_statistics (type anyarry)

Hi,

 

I need to spoof statistics, and so need to update the stavaluesN columns in pg_statistics, which are of type anyarray. Can this be done using an UPDATE statement ? I have tried using array[...] and '{...}' syntax with no luck. Any other ideas as to how to achieve this ?

 

Thanks,

Keith.