src/org/tiefaces/components/websheet/utility/SaveAttrsUtility.java
public static String getColumnIndexFromSaveAttr(final String saveAttr) {
		if ((saveAttr != null) && (!saveAttr.isEmpty())) {
			int iend = saveAttr.indexOf('=');
			if (iend > 0) {
				int istart = saveAttr.indexOf('$');
				if (iend > istart) {
					return saveAttr.substring(istart + 1, iend);

				}
			}
		}
		return null;
	}
public static String getColumnIndexFromSaveAttr(final String saveAttr) {
		if ((saveAttr != null) && (!saveAttr.isEmpty())) {
			int iend = saveAttr.indexOf('=');
			if (iend > 0) {
				int istart = saveAttr.indexOf('$');
				if (iend > istart) {
					return saveAttr.substring(istart + 1, iend);

				}
			}
		}
		return null;
	}
get the columnIndex from saveAttr. saveAttr format as: $columnIndex=xxxxxxx

@param saveAttr
saveAttr
@return columnIndex String