- Resolve #485 use sheet index instead of ID

-  added 3 internal function: getSheetID, getActiveSheetID, getSheetNameByID

1 files changed, 1 insertions, 1 deletions

diff --git a/cell.go b/cell.go
index 8e7ede1..a69f4d9 100644
--- a/cell.go
+++ b/cell.go
@@ -337,7 +337,7 @@ func (f *File) SetCellFormula(sheet, axis, formula string, opts ...FormulaOpts)
 	}
 	if formula == "" {
 		cellData.F = nil
-		f.deleteCalcChain(f.GetSheetIndex(sheet), axis)
+		f.deleteCalcChain(f.getSheetID(sheet), axis)
 		return err
 	}