jQuery Grid Plugin - jqGrid

Hi,

I've created a upper toolbar for fast searching.

There are some columns with values Yes/No (1 for Yes, 0 for No) and the problem I can see that for value Yes the jqgrid is sending the search filter, for No value it's not sending any filter and the grid reset to the initial state.

I'm trying to reproduce this problem on local grid, but on local grid it's working perfectly! On Json call, it's not filtering columns as I need.

I'm also printing all array sent values and I found that as soon as I choose No value the Jqgrid is sending _search: false and so the grid simply reset to the initial state.

The colmodel is:

{ name: 'user_enabled', index: 'user_enabled', width:60, align:'center', editable: true, formatter:"select", stype: 'select',
          edittype:'select', editoptions:{value:"1:Yes;0:No"},
          searchoptions: {value:":;1:Yes;0:No"}
},      

What can be the problem?

How to Fix this?

Thanks

Max