how to write the querry for copying one image field into another image field in sql server 2000

[developerit]

hi iam using sql server 2000 i have table images brabchid nvarchar(50) imagenew image imageold image at the first time iam storing image in imagenew field then by using update querry i want to copy imagenew field data into imageold field and in imagenew field iam storing new image but it is showing same images can you correct my querry update images set imageold=imagenew ,imagenew=@imagenew where branchid=@branchid

[developerit]

hi , sir iam waiting for your reply