annotative attribute fields in block plot as ######

Hello,

I made a block with an annotative attribute in it (field with the block position x,y,z).

The block itself is not annotative. When I insert the block, it works fine. Displaying the coords, no problem (after setting the annotation scales correct), but when I reopen the drawing, or plot the drawing, the field contents display as #########.

I tried several ways, to see what exactely goes wrong, but it seems like only make the field not annotaive works. But I want it annotative . Is this an know issue? Because it seems like it is always the same (acad 2009 and 2010), with all block I tried making like this. And is there a magic solution? I hope so!

ciao,

Lode