edit cells referenced by OFFSET doesn't update the formula result

Steps to Reproduce

1. load the attached offset.xlsx
2. change B1 to 2

Current Result

C2 doesn't change to 2

Expected Result

C2 is 2

Debug Information

• offset.xlsx contains several test cases. Edit cells in column A and B in offset.xlsx, the formulas in column C should update themselves. check each formula to get the details.
• the cause is: FormulaEngineImpl doesn't add OFFSET result as a precedent. ZSS just adds the OFFSET's first parameter as a precedent.

Workaround

register a custom formula engine (FormulaEngineExtend.java ) by FormulaEngineInit.java