How to filter JqGrid in order to show only negative values on specific column?

Solution for How to filter JqGrid in order to show only negative values on specific column?
is Given Below:

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This is the column of my JqGrid. I have added a checkbox in my Web-page to show only negative values when checked. How should I filer out my grid and send the changes through ‘setgridParam’, in order to see the row only with negative value.