I want to disable a particular checkbox for a row depending on values for other column.

I looked at the question [here](https://stackoverflow.com/questions/10042052/extjs-checkcolumn-disable-for-some-rows-based-on-value) .But all the answers here just modify the css .

I don't want just the updated css . I want to actually disable the checkbox for clicking.

Is there any way to achieve this?