This Code snippet will demo the problem. Constants were named and defined the same as you would find them in VB. Run this piece of code twice. Assume the value in the status field is currently nothing. First time replace the value in status field with 'It worked'. Second time through the value should already be 'It worked'. Unfortunately its not. During the second run the status field has its original value. With 81 or more fields in the RS the update does not succeed. With 80 or less the update succeeds.

ox = createobject( "adodb.connection" )
oy = createobject( "adodb.recordset" )

* Set up VFP oleDB
cDSN = "Provider=vfpoledb.1;Data Source=C:\data;Mode=ReadWrite"
ox.ConnectionString = cDSN
ox.Open

oy.ActiveConnection = ox
oy.CursorLocation = adUseClient
oy.CursorType = adOpenDynamic
oy.LockType = adLockBatchOptimistic

oy.open( "select * from books98 where recno() = 25")
if !oy.eof
* show the old value
=messagebox( oy.fields( "status" ).value )

* Change the value
oy.fields( "status" ).value = "Good test"

* Send the update through
oy.Update

* ask the rs to show us the value we put in it
* should display the value we put in.
=messagebox( oy.fields( "status" ).value )
oy.close

endif

release ox
release oy