row selection is not working for protected rows

Hi,

I have a grid datawindow with 10 columns, for example say department name is the  editable fields.I gave taborder as 10 for department _name.

if the employee salary is less than 1000, I have to protect those rows(not editable).if(employer_sal>1000,0,1) I am protecting the department_name field.the problem is once I retrieve the rows in datawindow I am not able to select the employee having the salary lessthan 1000 rows.please provide a solution for this issue.