Locate not working?

[kend]

I've just downloaded Zeos and have come across a bit of a problem. I can't get Query.locate to work as I would expect. Here's the line of code:

if qProducts.locate('Manufacturer;Code',VarArrayOf(['ACME','GOODSTUFF']),[]) then
ShowMessage('Found!!!!');

The "Found" dialogue box appears but grids and DBEdit fields are not updating.

I am missing something?

Many thanks,

Ken