Calculate characteristic in the report runtime

Question

Hello gurus,
I need to calculate a characteristic of the cube at runtime the report.
This feature must be calculated from the subtraction of the date entered by the user on the wanted and the expiration date of treasury paper.
If the number of days is within this range (0-30) the feature will have this value (0-30) and if this is within another range (31-60) will have the characteristic value (31-60), and so on.
At load time I can not do the calculation in this area, since it is not what is the date on which the report could only be done at runtime loved her.
I have seen that there is a user-exit for the calculation of characteristic and virtual key figures, but I have on how to use it and how to proceed.
Does anyone have any suggestions or would think I can develop something like this?
Sincerely,

Answer 1

hello,
I've been testing what I say.
And I've created two variables formula, one that reads user-Exira by the entry of the report and a processing path replacement to pick up the characteristic value of expiration date of the document.
And the result given by making the subtraction in wanted by a ratio calculated as follows:
Date of entry: internally stores it in this format 20100116
Mat Date: 20091218
Results Calculated key figure: 20100116 to 20091218 = 8898.
The result gives me is not correct, because the rest of the operators acting as if they were numbers and dates.
How I can fix this?
Sincerely,