Null values in BW

Hi,

I have this problem: I did an OLAP connection from a BW query, and when I use it the Business Objects Analysis for Excel, I got cells of indicators with numbers and some of them without anything (empty or blank). The empty cells belong to zeroes that I guess it is because of format or anything else.

Then, when I did the report in BW, I got the empty cells as well.

1. Is there any way of resetting the value of the cell in order to get a zero in the empty cell instead of nothing? I tried with the format defined by the user in Analysis, but the problem is still there.
2. Is there any way to design a variable of Analysis in order to reset the value?
3. Can I convert the empty values by 0,00 in BW? Or this is not possible?

I attached a print screen for example.

I would really appreciate your quick response.

Best regards,