Michel
Sorry but Sergey did respond a 3rd time with the correct solution, ask him!
I marked first one as a help but the 3rd response was a different and preferable solution using an editbox with a grid.

>>I was trying to respond to Sergey yesterday and hit the ESC key by mistake while editing the response. It deleted it. There were 3 responses from Sergey but I can see only 2 now. How does that happen? Can you retrieve it? I want Sergey to get credit for the solution.
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>Sergey made two replies in that thread where one of them already have been marked as a help to the solution. No message gets deleted unless it is a duplicate or if this is a test I have made.