使用setColProp在jqgrid工具栏过滤器中更改searchoptions。

I'm using jqGrid 4.4.5 and the toolbar filter.The grid can reloads base on condition(for example inbox or outbox letters).I use select options of a column.I need to change the select options of a 'type' column.For example if the grid show 'inbox letter' Then 'select options' show 'A,B' Otherwise show 'C,D'. I use this code for create grid:I'm using jqGrid 4.4.5 and the toolbar filter.T