How to find number of columns in Indesign CC

Hi,

I want to find out number of columns and gutter of active page in Indesign CC.

Following code is working in CS6.

IColumns* iColumns = Utils<ILayoutUIUtils>()->QueryFrontColumns();

    int32 noClmns = iColumns->GetNumberColumns();   

    PMReal gutter = iColumns->GetGutter();

For Indesign CC, I used "ILayoutUtils" interface

IColumns* iColumns = Utils<ILayoutUtils>()->Query_Columns(0,0);

if(iColumn == nil)

     break;

    int32 noClmns = iColumns->GetNumberColumns_();   

    PMReal gutter = iColumns->GetGutter_();

Interface pointer "iColumns" is not nil but Indesign crashes while GetNumberColumn_() .

Is the above API correct or is there another function to do the same.

If anyone has done this please do let me know.

Thank you all in advance.

Priyanka