}
//For each column, create a cache field and give it en empty sharedItems
for(int i=columnStart; i<=columnEnd; i++) {
CTCacheField cf = cFields.addNewCacheField();
if(i==columnEnd){
cFields.setCount(cFields.sizeOfCacheFieldArray());
}
//General number format
cf.setNumFmtId(0);
Cell cell = row.getCell(i);
cell.setCellType(Cell.CELL_TYPE_STRING);