How to get column header value from Crosstab?

Hi,

I have created crosstab report now, I want to display last column header value into Group Header section. For this I had tried following logic

Create two formula field test1 and test2

test1 code:

     WhilePrintingRecords;

     Global dateTimeVar EEDate;

test2 code:

     WhileReadingRecords;

     Global dateTimeVar EEDate;

     EEDate := database.field

Now put test2 filed in detail section and test1 put in Group Header section. But didn't get correct value. I had also try to put test2 field into Group Footer section but the result is same.

I want to display 07/12/2014 as start date and 07/26/2014 as end date.

Can anybody help me please ?

Thanks in advance.