try this
Grid1.RecordSource = Grid1.RecordSource
check the recordsourcetype property of your grid.

If this not work, then try this:

public servercount
Grid1.RecordSource = Grid1.RecordSource
thisform.mygrid1.refresh()

sele drs
servercount=reccount()

if servercount>nreccount
#define ccicon "add.ico"
with thisform.foxtray
.iconsource = ccicon
.icontip = "There are " + alltrim(str(servercount-nreccount)) + " unread documents in your list."
.showicon
endwith
nreccount=servercount
endif