Crosstab not refreshed after setFilterExt()

Hi all,

we are using DS 1.3 SP 1 on BOBI Platform 4.0 SP09.

I have a strange behaviour of a crosstab, which does not refresh when the setFilterExt() method filters on a range, which is not contained in the visible data. I would assume, that the crosstab actually shows "no data".

Here's the example:

The crosstab shows data for dates 14.08.2014 and 18.08.2014 according to the range filtered in the date selectors above.

Now, when I filter on range 01.11.2014 - 30.11.2014 - which would cause an empty result set - the crosstab does not change at all:

The filter works perfectly, when there is at least one date value from the crosstab that lies in the filtered date range.

I strongly assume, this is a refresh/rendering problem of the crosstab. I say that, because when I click on the magnifier symbol on the top right, a popup with a bigger crosstab referencing the same datasource shows up. And that crosstab actually shows "No data" for date range 01.11.14 - 30.11.14 as expected:

Here is the script from the "OK" button, which fires the filter command:

//process selections from the date fields
var lv_start = DF_START.getDate(); 
var lv_end = DF_END.getDate(); 
//convert start to external format
var lv_jjjj = Convert.subString(lv_start, 0,4);
var lv_mm = Convert.subString(lv_start, 4,6);
var lv_dd = Convert.subString(lv_start, 6,8);
var lv_e_start = lv_dd + "." + lv_mm + "." + lv_jjjj; 
//convert end to external format
lv_jjjj = Convert.subString(lv_end, 0,4);
lv_mm = Convert.subString(lv_end, 4,6);
lv_dd = Convert.subString(lv_end, 6,8);
var lv_e_end = lv_dd + "." + lv_mm + "." + lv_jjjj; 
//set range 
var lv_range = lv_e_start + " - " + lv_e_end; 
//set Button invisible again
BUTTON_CONT_RANGE_SEL.setVisible(false);
//set filter for contacts date
DS_KONTAKT.setFilterExt("C_KTABG", lv_range);

Any ideas how to solve this?