// <w:tblGrid><w:gridCol w:w="4788"/>
TblGrid tblGrid = Context.getWmlObjectFactory().createTblGrid();
tbl.setTblGrid(tblGrid);
// Add required <w:gridCol w:w="4788"/>
for (int i=1 ; i<=cols; i++) {
TblGridCol gridCol = Context.getWmlObjectFactory().createTblGridCol();
gridCol.setW(BigInteger.valueOf(cellWidthTwips));
tblGrid.getGridCol().add(gridCol);
}
// Now the rows
for (int j=1 ; j<=rows; j++) {