filter on less and equal to values

Hi,

In a source table I have a field that contains a number between 1 and 50.

In a page I want to show its records using a table vizualisation.

I want to use a slicer with the values 5, 10, 15, 20, 25, ..., 50

If I select e.g. the value 20 in the slicer, then in the table I get all records with the number 1 to 20

If I select e.g. the value 35 in the slicer, then in the table I get all records with the number 1 to 35

etc.

I tried to add a new column =(TRUNC((number-1)/5)+1)*5, but selecting 20 in the slicer, then in the table I get only the records with number 16 to 20, selecting 35 in the slicer, then in the table I get only the records with number 31 to 35

I tried to use a new table where I typed in the values 5, 10, 15, 20, ... , 50 and use this for the slicer. And I added a filter where number should be less or equal the selected value in the slicer. The filter doesn't work: all records are shown.

How can I solve this problem?

Thanks

R.W.