Hyperlinks Sorting Problem

I have used data grid to display the data from the database for a report.
The grid has 4 columns with first column is name of company and other 3 columns has numerical values. I have placed a hyperlink on the first column, clicking on it opens a sub report in a new window.
But as soon as place the hyperlink the data in the other 3 numerical data columns donot sort properly.
I have already used the following functions to sort the data properly
but its sorting the hyperlink column properly but not the other 3 columns

.setProperty(""data/text"",...)
.setProperty(""data/value",...)

Can any one tell me whats wrong, or suggest some code.