FYI, you have a typo in cell F32 of this demo: <a href="http:&#x2F;&#x2F;spread.grapecity.com&#x2F;Demos&#x2F;JS&#x2F;ExcelLikeSample&#x2F;" rel="nofollow">http:&#x2F;&#x2F;spread.grapecity.com&#x2F;Demos&#x2F;JS&#x2F;ExcelLikeSample&#x2F;</a>