Bound Span control, limited output to data page, output truncated

Hi, am having problems with the microsoft access "Bound Span control"
control.
I have html text stored in a field and want it displayed as html by using
the bound span control with format settings set to "html".
It works but the fields content is truncated at just over the 220 character
mark (output text) so assume that some sort of limit of 256 char is in place
if hmtl formatting tags were counted.
Any ideas on how to remove this limitation?
Cheers, E