Disable Selection appearance checkbox only

SmartClient Version: v9.0p_2013-11-03/PowerEdition
Browsers: All

We are using

selectionAppearance:"checkbox" in a List grid to generate a checkbox column.

Upon fetch, we want to disable the checkbox for rows that meet a certain condition and we are doing that by

dsResponse.data.findAll("isDisabled", true).setProperty("enabled", false);

Now the above statement is unselecting the checkbox and also disabling the entire record making the data in the record hard to read.

Is there a way to disable just the check box so that the user can still see the data.