Change attribute syntax

Hi,

I have an aux attribute that is Case Ignore String, sized 0-64512.

I think that is the standard size and that it might not be possible to have it bigger but that is mu requirement right now.

We store a big xml page in that attribute.

Is it possible to make it bigger?

Or if not change it to stream syntax maybe.

One problem is that over 5000 users use it so I hoped to do it without deleting all the values.