Hi all,
First of all thanks for a great community.
I have an issue when trying to write an Excel formula that works in Excel. I have written a simple formula like "=SUM(H2*2)" basically multiplying a field by two which works. The formula I have is slightly more complex, where the output of the below Excel formula works in Excel, however I get an error when trying to open the Excel file after running it. 
Excel states "We found a problem with some content..." in the file and I can recover the file but Excel removes the formulas.

Any idea on how so solve this issue will be much appreciated.
BR,
Michael