VarCharField Limitation of 5000?

[Chuck Pelto]

Doing a run on the app I created last year and am trying to move to  
the new environment of V4RB2.

Getting an odd VException while building the fields of the tables in  
an API-way.

Here's the call....

   call tblSchedules.CreateVarCharField("schd_descript", 5000,  
EVFlag.fIndexed) // description of the scheduled event

If the integer for the size of the field is 5000, the VException  
occurs. If it is 2000, there is no exception.

What's causing this?

Regards,

Chuck Pelto