APEX

Hi

I am having this weird problem , i gave some selected columns in my select query and data displayed with the given conditions perfectly then i added some more columns , around 30 coloumns to my select query(initially i just tested by selecting 6-10 columns names) , and my report does not display data for all the columns , its just displaying the data for columns i previously selected , do i need to do something to get all the columns, is there a limit in Apex that report should display only fixed number of columns ?or do i need to refresh any where in order to adapt the changes i have made in my select query ?

i have logout and logged in , but it did'nt work..

Could any body please let me know what could be the reason for this?

Thank you